Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4f22a35e612eb6b…

MALICIOUS

PDF

44.0 KB Created: 2020-03-29 14:59:16 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: 3ca62165fb41cc01ec42494f26db5676 SHA-1: 0d3b40ad28b6e22812d4f737acd7bc13f65ee0b1 SHA-256: d4f22a35e612eb6bb2a5a062a35eb18514630e714bd70f79b03bfb3b14fab55d
96 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 to other PDF files hosted across numerous domains. This behavior is indicative of a link farm or a distribution mechanism for malicious content. The document body contains garbled text and a reference to 'Mortal hacia atras pasos', which does not provide clear user-facing intent beyond the link farm. No scripts were extracted from this sample.

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://thehnossaproject.com/uploads/1/3/0/3/130323806/130323806.html#mortal+hacia+atras+pasos PDF link annotation
    • http://loyaltresses.com/uploads/1/3/0/8/130814197/9634613.pdfIn PDF document text
    • http://paulbutlerusa.com/uploads/1/3/0/4/130476168/337293.pdfIn PDF document text
    • http://hillbillyheaven.net/uploads/1/3/0/4/130483649/5469053.pdfIn PDF document text
    • http://ukdiscountcard.net/uploads/1/3/0/5/130589207/834951.pdfIn PDF document text
    • http://berryandbloomfloral.us/uploads/1/3/0/7/130776102/repexizorigar_xevuzinela_riroze.pdfIn PDF document text
    • http://hotdame.org/uploads/1/3/0/5/130589064/vibuxegirexa_rivusu_lofewiji.pdfIn PDF document text
    • http://butterflynette.com/uploads/1/3/0/7/130776385/vifalupinuxijo.pdfIn PDF document text
    • http://livinginhispresence3.com/uploads/1/3/0/2/130270855/8223496.pdfIn PDF document text
    • http://priyabery.com/uploads/1/3/0/7/130739049/3b52e34b5.pdfIn PDF document text
    • http://garywallislaw.com/uploads/1/3/0/7/130775543/9967387.pdfIn PDF document text
    • http://carlosgaviriabass.com/uploads/1/3/0/5/130590208/xerutulid.pdfIn PDF document text
    • http://resultsmasterycoaching.net/uploads/1/3/1/3/131383678/1866688.pdfIn PDF document text
    • http://mchdehs.org/uploads/1/3/0/7/130776307/f5b6b175c100.pdfIn PDF document text
    • http://jlhomeinspections.net/uploads/1/3/0/7/130739192/fcd38.pdfIn PDF document text
    • http://cancunsup.com/uploads/1/3/0/6/130639854/2ed440cf6112.pdfIn PDF document text
    • http://strengthinstories.com/uploads/1/3/0/8/130873771/fasar_polatowugor_nutajoga_bufap.pdfIn PDF document text
    • http://gemstonecopywriters.com/uploads/1/3/0/5/130543059/wavuxodutam_sazojub_kidafu.pdfIn PDF document text
    • http://mingalarfoods.com/uploads/1/3/0/5/130588318/zofirubagu-gisog-fukexukidavonu.pdfIn PDF document text
    • http://higherfreequeensee.com/uploads/1/3/0/6/130604416/rimewekik_damokitidafovi.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: garywallislaw.com 3 samples

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_off000080a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A7 9464 bytes
SHA-256: 2ff6029ee0ce39217884c5d046472f1d0ea4686442a28e81137485f68154449b

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