Malicious PDF — malware analysis report

Static analysis result for SHA-256 14de94e93d62ed25…

MALICIOUS

PDF

79.5 KB Created: 2021-09-02 06:06:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 3615ea1bf0662773d09fc002a32016f9 SHA-1: b94a91353698ea6b533964e7b825857404b6cd3e SHA-256: 14de94e93d62ed254718c068e55269ecca6d7d321347b50e93d31bfa291206f4
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of phishing and containing embedded JavaScript. The heuristics indicate it functions as a link farm, directing users to various compromised or disposable hosting sites, likely to download further malicious content. The 'SE_CALLBACK_LURE' heuristic strongly suggests the document's purpose is to trick the user into calling a fraudulent phone number.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://hiace-yoshikawa.com/js/upload/files/43470940821.pdf In PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1606dcef1b1e3b---xemikolebisulelul.pdfIn PDF document text
    • http://hanhthien.net/uploads/file/selodumubifavelekogirel.pdfIn PDF document text
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/83fa774b11311a647dc6bd44f562a19b/48370034729.pdfIn PDF document text
    • http://nfrostov.ru/upload/files/87754160004.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1dddccbb79---57191732004.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a3f64185c5a---4475692013.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/832cec919718d42d765bf2d312579c2d/gawepatojunetefuxajubejo.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085c7d2c7a0b---53313728192.pdfIn PDF document text
    • http://bosch-service-center.ru/uploads/files/33902688647.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/7b8534c1941e994579923085cfbeddab/75332373056.pdfIn PDF document text
    • https://www.santaterezinha.com.br/js/ckfinder/userfiles/files/85770689103.pdfIn PDF document text
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/614160cf0e772260a8c16b798a8683e9/kejokuvarenufamelipimumu.pdfIn PDF document text
    • http://euredit-editions.com/userfiles/file/tufabomakudate.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6bd4e0a9b---fawelivap.pdfIn PDF document text
    • http://marcth.pl/media/fck/file/gakigepujefokovokuzup.pdfIn PDF document text
    • https://prospr.fr/ckfinder/userfiles/files/60093295467.pdfIn PDF document text
    • http://decaiyun.com/upload/file/21081415264164272545gfprguio1f.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c603d8061ce---boberoz.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/d72fhlkilleb229jho80qrmdvm/46329707481.pdfIn PDF document text
    • http://normel.org/files/upload/file/59718271121.pdfIn PDF document text
    • http://asbufestival.com/uploads/FCK_files/file/jagipanuvizixa.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/21294622427.pdfIn PDF document text
    • http://alhouti.com/userfiles/file/kopukujinekepeto.pdfIn PDF document text
    • http://kovacsoltvaskerites.hu/images/file/69174956828.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=emergency+department+medical+director+salaryPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0ED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e8ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FF 17608 bytes
SHA-256: 158e0b97aeb309981b26ef748e860c3c556955cc9daa5dfe857892d8e9ebd101
font_02_sfnt_off000116de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116DE 10956 bytes
SHA-256: 806d4fc3a25a91c858ad1a1c886646a4ab753f9394c15c1202525cc75ed60971

Open this report in the interactive analyzer, or submit your own file for analysis.