Malicious PDF — malware analysis report

Static analysis result for SHA-256 0751cb438667a3ba…

MALICIOUS

PDF

38.3 KB Created: 2020-04-01 11:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e47cba09ac3fe7a0493beca661c27c93 SHA-1: c05edb929ffc6b28e7e9ee08c74515b902d82a82 SHA-256: 0751cb438667a3baf4ad22a7c2f471cd3c3641f67baa9321a73bcb4416a69174
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'filing for llc in florida requirements' but is primarily a link farm, embedding numerous external URLs. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a tactic to drive traffic or distribute further malicious content. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact payload or intent beyond link distribution.

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://serafinaappel.com/uploads/1/3/0/2/130273625/130273625.html#filing+for+llc+in+florida+requirements
    • http://douladeer.com/uploads/1/3/1/0/131069838/9730947.pdf
    • http://angel-foot-spa.com/uploads/1/3/0/4/130476347/3438823.pdf
    • http://mynuagain.com/uploads/1/3/0/3/130323693/b27167.pdf
    • http://meiguisha.us/uploads/1/3/0/9/130969140/tojotibew.pdf
    • http://starlite.tech/uploads/1/3/0/2/130272898/tideruriseberusaju.pdf
    • http://maggiesmithartist.com/uploads/1/3/0/7/130776872/rekazi-rixadagakil-vetebi.pdf
    • http://itranssupport.pl/uploads/1/3/0/7/130776174/ziwogubudufuwu.pdf
    • http://lookaorundme.com/uploads/1/3/0/5/130546977/kikofudebulutuxuromo.pdf
    • http://skipcunninghamandassociates.com/uploads/1/3/0/5/130539841/sosogineli.pdf
    • http://mta-sts.mail.planbdecals.com/uploads/1/3/1/4/131407377/3898dcccdc9.pdf
    • http://theatricks.us/uploads/1/3/0/7/130740385/zabopupubip_vafinamodufetaw.pdf
    • http://rituinteriordesigns.com/uploads/1/3/0/5/130539049/xudibak.pdf
    • http://suzynsam.com/uploads/1/3/0/6/130620909/6555475.pdf
    • http://dorseydeportfolio.com/uploads/1/3/0/6/130620511/52f30078d8dd4.pdf
    • http://carolgremillion.com/uploads/1/3/0/6/130640033/lavewuliturovodu.pdf
    • http://sherriffsconstruction.com/uploads/1/3/0/4/130476830/8308151.pdf
    • http://harrisonashtonphoto.com/uploads/1/3/0/4/130488157/nixixobefidise.pdf
    • http://mobilityonwheelsusa.com/uploads/1/3/0/7/130739891/xapavelon-liporo-vonajisumenaba.pdf
    • http://designsacredgarden.com/uploads/1/3/0/5/130550969/5443178.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_off00006d2a.bin
18290922aee2598fdd02edb053d8ccc13f09586aa8ba6bd2446e776018a1df9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2A 7868 bytes

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