Malicious PDF — malware analysis report

Static analysis result for SHA-256 d93c0893512c9a49…

MALICIOUS

PDF

81.8 KB Created: 2021-06-29 04:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 128f4f9b05ce084aab076f6652e9da63 SHA-1: ee0f5c201ebf0fa5df959e99aecb3e77f96abaff SHA-256: d93c0893512c9a49ae40e99283e0d6b0e46a542cac7a4053ba316fecb2d40202
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and compromised CMS upload links strongly indicates an attempt to lure victims to external, potentially harmful, resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://catamma.ru/uplcv?utm_term=solo+driving+practice+test PDF link annotation
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160c2ae17c2a55---larak.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160be887904dec---xifazuxikivofujakimuz.pdfIn PDF document text
    • http://cba60.com/clients/6/6c/6c2dd71b6188bc8e8f5adc6209c6f86c/File/wofanesugutib.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/d40e982124553774508cc5a8f68bc800/54989228196.pdfIn PDF document text
    • https://xlspandoek.nl/userfiles/file/dufamuwuzevejakigofigero.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/5dtialprsiadbdfotph53vcnrd/29455602318.pdfIn PDF document text
    • https://binarbaid.com/public_html/userfiles/file/bumabafo.pdfIn PDF document text
    • http://eviljoy.com/UserFiles/File/pinogebavanesipipijajep.pdfIn PDF document text
    • https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/4a367f5638d82497359bf416f3c4dc17/dizopanamufubox.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffbe69a9b7---33579449837.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608be211a123f---vufemeluvu.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa3e6adfe2---71304790990.pdfIn PDF document text
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/om492hgh35d2sefc2cf1ffjeq1/99908697198.pdfIn PDF document text
    • https://swift-tw.com/lcc/upload/files/18347804814.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/ocm8mivvlo7gvh2sqm7r40pfnd/jixowafawapijesigufemolop.pdfIn PDF document text
    • http://matchonusa.com/uploads/files/rokulodusabizibovozizeze.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/29ccc03a2a1dbfc7124ec6cd2917142e/jabadutuwodibonofimovip.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/pgmavajjj3b3sdtlja8okfchqc/60841569531.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/f256f0ccae3d8ff93c6c5516497f9f14/99373994048.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/808aa2af1c589a5d196ddb006d3c7282/bibawisudinezubenilalak.pdfIn PDF document text
    • http://chanakyaaerospacedefence.com/userfiles/file/lexifevamazinazelazopi.pdfIn PDF document text
    • http://aardbeienfeesten.nl/uploadimages/files/besudosowazidiz.pdfIn PDF document text
    • http://sequirk.ie/userfiles/file/gurimamoteloweto.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB91 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f3a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A8 10828 bytes
SHA-256: 463469a9d53371e3b95e290afa95425926e602977b4e0d9b0c775e462c2d65a9
font_02_sfnt_off00010c83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C83 17308 bytes
SHA-256: b6d1d8af3f94a0189a55f0f61d11598c363729c5a7d4a36647d2b1b8e2786bcd

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