Malicious PDF — malware analysis report

Static analysis result for SHA-256 462325e5bdf04c30…

MALICIOUS

PDF

39.8 KB Created: 2020-05-18 01:44:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 5462e03864f3451e6cc39b8c796a3c99 SHA-1: 17241f4335236d7fe802e31faa476f2a181d9c98 SHA-256: 462325e5bdf04c30b854fa279162caa65a56c8f332724f702208d434a7a8f2ef
104 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many pointing to PDF files, suggesting a link farm or redirection strategy. The document body text includes urgency language like 'account will be terminated' and 'action required within 24 hours', intended to prompt the user to click on the embedded malicious links. No scripts were extracted, and the document body content is heavily obfuscated, limiting further analysis of the specific lure.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://sasart.net/uploads/1/3/0/4/130477048/130477048.html#cdc+full+form+in+finance PDF link annotation
    • http://calvarybconline.net/uploads/1/3/0/5/130588251/rojulewesir.pdfIn PDF document text
    • http://dashofemkay.com/uploads/1/3/1/4/131482864/0a702384.pdfIn PDF document text
    • http://rettklaer.com/uploads/1/3/1/0/131069978/zusamu.pdfIn PDF document text
    • http://alex-and-alice.com/uploads/1/3/0/6/130640028/2f899e90fe9.pdfIn PDF document text
    • http://weeblackbook.com/uploads/1/3/0/4/130435774/6951239.pdfIn PDF document text
    • http://getzenoutdoorservices.com/uploads/1/3/1/8/131856270/wamazazekoni.pdfIn PDF document text
    • http://blockdevelopmentgroup.net/uploads/1/3/0/4/130483558/907050.pdfIn PDF document text
    • http://pamelaschneider.com/uploads/1/3/0/7/130738852/da76e.pdfIn PDF document text
    • http://allsourcedist.com/uploads/1/3/1/1/131163638/voposisepud_zifab_kutelexivazusod.pdfIn PDF document text
    • http://aikosilkart.net/uploads/1/3/0/7/130739220/ce2c7715d.pdfIn PDF document text
    • http://guitareflamenco.com/uploads/1/3/0/7/130740464/2202056.pdfIn PDF document text
    • http://ubhari.org/uploads/1/3/0/7/130740013/libobomatuxetowonose.pdfIn PDF document text
    • http://sarahminarik.info/uploads/1/3/1/3/131379420/xupemanane.pdfIn PDF document text
    • http://nsepulveda.com/uploads/1/3/0/3/130323888/9876859.pdfIn PDF document text
    • http://twodogspromotees.com/uploads/1/3/0/5/130539412/4568865.pdfIn PDF document text
    • http://utilitycarsunlimited.com/uploads/1/3/0/8/130873875/9767841.pdfIn PDF document text
    • http://fannyhaiat.mx/uploads/1/3/0/9/130969921/kafobuwenas.pdfIn PDF document text
    • http://hamptonroadsauctions.com/uploads/1/3/0/5/130551491/digibuwizurazon-juwipobivep.pdfIn PDF document text
    • http://milesdefensive.com/uploads/1/3/1/1/131163957/4604451.pdfIn PDF document text
    • http://lzremodeling.com/uploads/1/3/1/0/131070979/6849806.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 4

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_off00006d2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2B 11376 bytes
SHA-256: 02c3826444994a794690640777c1f1cd336656fd693e92e9ae17304a0943ec65

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