Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6ee66ca647416c…

MALICIOUS

PDF

90.5 KB Created: 2021-09-02 16:38:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 1abfffecc64c1dfe6396c80867a6ef86 SHA-1: 3f86f59d4b9da9bc75242b28c02e3b9a4a71316f SHA-256: 0d6ee66ca647416cf729d0bfabe6119e442129d90460aab7fa8aadb857568256
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of multiple distinct hosts and the use of UTM parameters in some URLs further support a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • 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.
  • 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 https://coretry.ru/uplcv?utm_term=toccata+et+fugue+en+r%C3%A9+mineur+partition+piano+pdf PDF link annotation
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/ddc9c1c7a05cce89de6dad9a98e1edc3/xobelapulutexi.pdfIn PDF document text
    • https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/23400067ed2f31de1af72274a8e613e3/dafunazigu.pdfIn PDF document text
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/dcccc9e6f394b1b24af2e8a8b9858f51/mafoxetebixovuzexu.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/1610f001861b55---posutenuledex.pdfIn PDF document text
    • https://twinslock.com/ckfinder/userfiles/files/30974011981.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098776b04469---degopasebirulupizivodejon.pdfIn PDF document text
    • https://drisraadentalcenter.com/userfiles/file/namuborododelinenimubus.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/0f77ed02347ab0002e61152107022c0e/paduzomulomogak.pdfIn PDF document text
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8d48279ab4---bifofudukelojusafopitataj.pdfIn PDF document text
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1fd85e1f03---47902625162.pdfIn PDF document text
    • http://wittlich-luexem.de/userfiles/file/pezovenogunozajorokipuzum.pdfIn PDF document text
    • https://easternresources.net/ckfinder/userfiles/files/32216562957.pdfIn PDF document text
    • http://baltyk.recykling-rejs.pl/imgturysta/files/76871695364.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/rufitasi.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160921e2db1219---vazozenifoxiwat.pdfIn PDF document text
    • http://gsprojekt.eu/userfiles/files/pilosubetesuvafes.pdfIn PDF document text
    • https://cplastik.cz/data/cms/file/82420029617.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610869fa4aaad---zululararavugarudenos.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/11ba3f9b0f626cbce5d6d5328feabb82/kiwojivimejigip.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/6893d25444c57fe2966aa3dff178a9ed/74450241504.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///14367424678.pdfIn PDF document text
    • http://ballmillfactory.com/d/files/mapojonanokud.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/65802092861.pdfIn PDF document text
    • https://feniks9.ru/ckfinder/userfiles/files/gixigojalajowasavopakomud.pdfIn PDF document text
    • 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_off0000f239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF239 10968 bytes
SHA-256: 463d5d88af2d10782718f2126bc75c16375dfd06330430af60a2f8e30bf33435
font_01_sfnt_off00010b25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B25 21536 bytes
SHA-256: d54019c31bdf502d20647e6005487d1b919fb6690531ad272a289fc5678d026c
font_02_sfnt_off0001417a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1417A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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