Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cea98f4ef7fd98e…

MALICIOUS

PDF

39.3 KB Created: 2020-03-22 13:12:43 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 10b617ec42fd3b845bc2451e3a58f10d SHA-1: 12d08bd7a602d8555803cdcf6b466bbb6f62d4c3 SHA-256: 7cea98f4ef7fd98e215b2e0145f36db4861ba7fad6be809859c4e2e0e23ac0f8
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link-farming or SEO manipulation tactic. The embedded URLs point to various PDF files hosted on different domains, indicating a potential distribution or redirection mechanism. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to distributing further content or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-9284729-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9284729-0
  • 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://laurabotzongyoga.com/uploads/1/3/0/7/130776594/130776594.html#divine+mercy+diary+audio PDF link annotation
    • http://stephaniemarrazzo.com/uploads/1/3/0/7/130740464/widixapebo_biwaju_rejisa_petewifigeluwu.pdfIn PDF document text
    • http://cruisingmoriarty.com/uploads/1/3/0/4/130476172/3702258.pdfIn PDF document text
    • http://kgboutiquedesigns.com/uploads/1/3/1/0/131071063/woxodamunuwi.pdfIn PDF document text
    • http://drdom.com.au/uploads/1/3/0/4/130490056/8761904.pdfIn PDF document text
    • http://webdisk.curriculumconsults.com/uploads/1/3/0/4/130476342/5465806.pdfIn PDF document text
    • http://www.leaseoptioninvesting.net/uploads/1/3/0/6/130639121/lesato.pdfIn PDF document text
    • http://myurbanhermit.com/uploads/1/3/0/7/130775115/2825699.pdfIn PDF document text
    • http://marketdragon.net/uploads/1/3/0/7/130740054/4939959.pdfIn PDF document text
    • http://ns2.winsoft.com/uploads/1/3/0/4/130488301/tupojunawinevunavo.pdfIn PDF document text
    • http://mountainandocean.org/uploads/1/3/0/8/130814562/8961855.pdfIn PDF document text
    • http://www.kikicomm.com/uploads/1/3/0/4/130475921/livumoz_kidulamudul_vizaz.pdfIn PDF document text
    • http://hinduebooks.org/uploads/1/3/0/8/130814633/riwazuwujuji.pdfIn PDF document text
    • http://wrenviroservices.com/uploads/1/3/0/6/130604688/5440944.pdfIn PDF document text
    • http://realtimeoperatingsystem.net/uploads/1/3/0/6/130603673/fuvezova-budobovew.pdfIn PDF document text
    • http://ekincengizkan.net/uploads/1/3/0/7/130738723/tokujilibidisab.pdfIn PDF document text
    • http://craigslisd.com/uploads/1/3/0/4/130476078/wojelekafo_somalasosodo_rerolowomagumum.pdfIn PDF document text
    • http://datatelecom.co.uk/uploads/1/3/0/4/130483191/jotidigi-nikomizu.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

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_off00007021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7021 7828 bytes
SHA-256: 49009bd5870ca51fdfea0590681a8020407fb84348c312ccc7561bb2ce881026

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