Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab49c630bd89e04…

MALICIOUS

PDF

73.7 KB Created: 2020-03-13 07:11:29 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 6c2f79fdaf1c5d4a247a3b914298b215 SHA-1: a3e80afc856d033c2a79118af6b021f366b382df SHA-256: 7ab49c630bd89e04fcab82eb7d8252e856b602ff424961fcee17cbd810d25dd1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many with numeric slugs, indicative of a link farm or SEO spam tactic. The document body text, though heavily obfuscated, contains a URL that appears to be the primary lure. The ML classifier strongly flagged this PDF as malicious, and the heuristic firings confirm the presence of numerous external links, suggesting a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://vps6-internal-admins.pleasingfood.com/uploads/1/3/0/7/130776458/130776458.html#deductive+method+meaning+in+tamil PDF link annotation
    • http://mexiitem.com/uploads/1/3/0/7/130776878/179757.pdfIn PDF document text
    • http://restaurantelallorona.com/uploads/1/3/0/6/130621392/7463791.pdfIn PDF document text
    • http://nickjanelandscape.com/uploads/1/3/0/7/130776795/ponobavoz-zolujurugejif-todigavujowined-viwamujuletol.pdfIn PDF document text
    • http://activemedia.adviser.live/uploads/1/3/0/4/130483338/seribuwugefugizabuge.pdfIn PDF document text
    • http://whm.metalbosco.com.ec/uploads/1/3/0/5/130551971/876791.pdfIn PDF document text
    • http://eastcoastbikerentals.com/uploads/1/3/0/3/130379204/9680606.pdfIn PDF document text
    • http://iamericcash.com/uploads/1/3/0/8/130813509/lonepufanatagil_xunegule_gatovakizezin_widijafipisu.pdfIn PDF document text
    • http://guemeschannelembroidery.com/uploads/1/3/0/5/130551294/xunawubadidan.pdfIn PDF document text
    • http://barnsloftcreations.com/uploads/1/3/1/0/131071299/raziperebe.pdfIn PDF document text
    • http://charliechortle.com/uploads/1/3/0/6/130621213/cd1c9efeeaae3.pdfIn PDF document text
    • http://thehumoflife.com/uploads/1/3/0/7/130740625/635636.pdfIn PDF document text
    • http://mail.indigowireless.com/uploads/1/3/0/5/130540083/c3cebd8.pdfIn PDF document text
    • http://summersaleswork.net/uploads/1/3/0/4/130488141/vitoj.pdfIn PDF document text
    • http://www.dinadgoldhammer.com/uploads/1/3/0/7/130739780/zajokasoxasafijuled.pdfIn PDF document text
    • http://ygautos.com/uploads/1/3/0/8/130813489/lujigaxatik_gagajafutamur_wepuvedutawegob_rofiponube.pdfIn PDF document text
    • http://bifemecanico.com/uploads/1/3/0/3/130313323/semiveguxedujigiwalo.pdfIn PDF document text
    • http://www.space2m.info/uploads/1/3/0/4/130488688/tipekulu_rugigogisaj_semuzugad_pefumenafotudal.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
🗂 Part of campaign: bifemecanico.com 5 samples

Related samples 2

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_off0000f708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF708 9560 bytes
SHA-256: 3720077b0f657d6f4e78d1deea19ac9c7b57d0a3a16ee1f3132ddb4513a8249c

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