Malicious PDF — malware analysis report

Static analysis result for SHA-256 044935eae380d861…

MALICIOUS

PDF

38.1 KB Created: 2020-04-10 06:13:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 12525695af22008d1bcc7b2dc3d8c692 SHA-1: b26758166ab0dbeea4ef153c24f4f9d6553275da SHA-256: 044935eae380d861482674f1cf4f41ef17414dce38b028efb03fe6decf1638f9
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body text, though partially obfuscated, also contains URLs. This suggests the primary purpose is to direct users to a network of websites, likely for SEO spam or to host further malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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://mdmagazine.net/uploads/1/3/1/4/131436972/131436972.html#sew+everything+workshop+book
    • http://leadingladies904.com/uploads/1/3/0/6/130603793/gexunozigotonob.pdf
    • http://taletroveproject.com/uploads/1/3/0/8/130814050/feziwavotolonano.pdf
    • http://voterichardnewton.com/uploads/1/3/1/3/131382239/rulogojedijepe.pdf
    • http://mcfcommercialroofingandrepair.com/uploads/1/3/1/4/131452827/dulozujejanime_vapotokot_powobam.pdf
    • http://bluebellpsychotherapy.com/uploads/1/3/1/3/131398268/pexirudepejopi-fisima-sasovim-rakedisidojivo.pdf
    • http://sophiamason.org/uploads/1/3/0/3/130313524/xomokaleb.pdf
    • http://starscamptaekwondo.com/uploads/1/3/0/2/130272482/mijuripetapebitan.pdf
    • http://dazzling-gardens.com/uploads/1/3/0/7/130775856/937665.pdf
    • http://energybasedhealth.com/uploads/1/3/1/3/131380236/jasotir_kobodid_xinofelu_femegubatax.pdf
    • http://missionbellsministries.org/uploads/1/3/0/5/130588805/baf7bad247.pdf
    • http://scbaptistchurch.com/uploads/1/3/1/0/131070774/09959632.pdf
    • http://dinsdalerealtyllc.com/uploads/1/3/0/7/130739875/7e83ecf.pdf
    • http://pnwrecruiting.com/uploads/1/3/0/7/130739590/2970486.pdf
    • http://dermascapes.com/uploads/1/3/0/5/130551904/ed124fbdec6ae1.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bf4.bin
5facc18cc072f0b0fc38f4bea5970cd2ec65d94187b353fdb955bc65f7074fed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF4 8036 bytes

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