Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4d677f18504860d…

MALICIOUS

PDF

34.0 KB Created: 2020-05-24 08:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: dbe65089a69aee99a930466de174cd73 SHA-1: 7c5293fe3aa396cc447d87f686f7d422113a2ca4 SHA-256: e4d677f18504860d103ac2a4310b54393b624fa2683f76766b24ade0de25b1ee
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF document contains a mass of external links, many of which are numerically or generically named, suggesting a link farm or SEO abuse tactic. The document body, though heavily obfuscated, contains references to a 'Woods timer manual' and includes numerous URLs. The presence of a 'Callback phishing phone lure' heuristic further indicates a social engineering attempt to trick the user into interacting with malicious content or services. The primary attack pattern involves directing users to potentially malicious websites through these embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://dgdevelopment.net/uploads/1/3/1/8/131856984/131856984.html#woods+timer+manual+50013 PDF link annotation
    • http://chocolatekandii.com/uploads/1/3/0/8/130873943/0e86339c32362.pdfIn PDF document text
    • http://reneepaintingandlandscape.com/uploads/1/3/0/8/130813722/379571b8da.pdfIn PDF document text
    • http://74-123-77-174.mgwnet.com/uploads/1/3/0/5/130588506/sebolidagafigo.pdfIn PDF document text
    • http://wherefuturebegin.com/uploads/1/3/0/5/130541733/debusodokirad_suwafidej_zavudatez_xelaf.pdfIn PDF document text
    • http://gsaconstruction.net/uploads/1/3/1/6/131637150/095d05.pdfIn PDF document text
    • http://ultimatemartialartsusa.com/uploads/1/3/0/7/130739513/bujudavatojolidapa.pdfIn PDF document text
    • http://mlle-esthetique.com/uploads/1/3/1/3/131380998/2106065.pdfIn PDF document text
    • http://eduk8tork12.org/uploads/1/3/1/0/131070973/b2bebbd53cabc.pdfIn PDF document text
    • http://kenicholson.com/uploads/1/3/0/6/130620666/tukabunosilubes.pdfIn PDF document text
    • http://isotherme.eu/uploads/1/3/2/3/132303351/lagozoxuj.pdfIn PDF document text
    • http://womenofcouragela.org/uploads/1/3/0/5/130590561/xezagujunefefebidav.pdfIn PDF document text
    • http://glammshop.com/uploads/1/3/1/4/131438164/wugakifeputat.pdfIn PDF document text
    • http://thebridgeyouthcenter.org/uploads/1/3/1/4/131483069/4727892.pdfIn PDF document text
    • http://sunniesllc.com/uploads/1/3/0/6/130605292/lezer.pdfIn PDF document text
    • http://luxxe-white-by-ac-88.com/uploads/1/3/0/7/130775115/jobogapal.pdfIn PDF document text
    • http://utilityfitness.com/uploads/1/3/1/4/131406505/todelidowusep.pdfIn PDF document text
    • http://shannonsbling.net/uploads/1/3/1/4/131483719/5753191.pdfIn PDF document text
    • http://guadasauce.com/uploads/1/3/0/5/130538953/7273055.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000580a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x580A 10152 bytes
SHA-256: 5204c6f28c41242ee80463efe014ad57b3e64a2c1ece1f89da40b536839c0b59

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