Malicious PDF — malware analysis report

Static analysis result for SHA-256 f445c193856bc5b2…

MALICIOUS

PDF

42.3 KB Created: 2020-03-31 20:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8c6c9590adfab321999f3ee79beeae0b SHA-1: 2ca602d4cd58982c652e522e3004c39d8cea808d SHA-256: f445c193856bc5b274504ada27d6bafbeca29b01861efe4bb708e72ba46c495f
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The document body, though partially corrupted, contains a URL that points to a collection of SEO-optimized PDF files. This suggests the primary purpose is to redirect users to a network of sites, likely for advertising, traffic generation, or to host further malicious content. No scripts were extracted from this sample.

Heuristics 3

  • 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
  • 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://cfthomas.com/uploads/1/3/0/7/130776734/130776734.html#juegos+de+sopas+de+letras+en+castellano+para+adultos
    • http://streetsanddrinks.com/uploads/1/3/0/6/130604129/68941e07f59b3.pdf
    • http://thepoolguysofjupiter.com/uploads/1/3/0/2/130288338/e1caf9.pdf
    • http://trilogybikeclub.com/uploads/1/3/0/5/130550826/1176358.pdf
    • http://gorjillc.com/uploads/1/3/0/7/130775704/xibuziwowaw.pdf
    • http://hostmaster.swkp.org.uk/uploads/1/3/1/4/131453603/konijo.pdf
    • http://cypressridgelakejordan.com/uploads/1/3/0/2/130287302/9b5312f6df.pdf
    • http://eazi-car-payments.com/uploads/1/3/0/8/130874600/karimuviru-xakabemejurinuf-togax.pdf
    • http://blueglassllc.com/uploads/1/3/0/7/130740502/fusot.pdf
    • http://doeyzeedesigns.com/uploads/1/3/1/3/131379111/3788191.pdf
    • http://jjeng120.com/uploads/1/3/0/7/130738996/e5bee745.pdf
    • http://columbinecabinsco.com/uploads/1/3/0/7/130739537/gikudugigidagi-pavibititoze-juvuz.pdf
    • http://dasautowerks.com/uploads/1/3/0/6/130605332/fizizutusojubor-sukubi-liduxubi.pdf
    • http://augustmaverick.com/uploads/1/3/0/6/130604493/sisibujidus.pdf
    • http://alohawraps.co/uploads/1/3/1/4/131454207/2905016.pdf
    • http://pro-cleanwindows.net/uploads/1/3/0/2/130289583/vafilesun-bupune-midiliwunovo-pedakewap.pdf
    • http://crazycactuscreations.com/uploads/1/3/0/6/130639933/lumijizituke.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_off00007abf.bin
c91cf7ce6230b14f813977e6200b02e3e13cc386b04ff1c3c7a012b432bd8f21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABF 8420 bytes

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