Malicious PDF — malware analysis report

Static analysis result for SHA-256 43856158e813691c…

MALICIOUS

PDF

40.4 KB Created: 2020-03-10 03:38:32 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 48bfeb215636a3c74b268bd30be74c0d SHA-1: 5b637b6fbcc0755b1a2a64e06f550715ed27aa9a SHA-256: 43856158e813691c8b6639cca78c364d7dc1bac99b4d9f5ce4679def1b06bb98
62 Risk Score

Malware Insights

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

The PDF document contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or SEO manipulation tactic. The document body itself is largely unreadable, but the presence of numerous external links is the primary indicator of malicious intent. 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://lifteens.com/uploads/1/3/0/6/130620428/130620428.html#meaning+of+drainage+pattern+in+geology
    • http://www.justfortodayrelax.com/uploads/1/3/0/5/130588718/2220572.pdf
    • http://missouribankingcareers.com/uploads/1/3/0/6/130622073/vanufofulip-zoxenonopapuxu-zuxulaxi.pdf
    • http://mobileplantmanagement.com/uploads/1/3/0/5/130551986/zodumen_vogonatowab_fizitemu_lewakug.pdf
    • http://amysstoryfilm.com/uploads/1/3/0/5/130588678/2875668.pdf
    • http://herregaardskoncert.dk/uploads/1/3/0/7/130739793/labaregulal.pdf
    • http://onlinelarry.net/uploads/1/3/0/7/130738576/8146741.pdf
    • http://renaturebeauty.net/uploads/1/3/0/6/130620460/silekeruxoxoxifepu.pdf
    • http://michaelquesnel.com/uploads/1/3/0/5/130551309/femugupor-vejitibofosok-zizegaxejenato.pdf
    • http://www.sacredpregnancyedmonton.ca/uploads/1/3/0/6/130620297/8394351.pdf
    • http://lovelifetho.com/uploads/1/3/0/2/130288316/fapirugewutato.pdf
    • http://nilsravalvecoverracing.com/uploads/1/3/0/2/130270813/werubapaderebi-kawezafigumupo-gavafuxo-rijuniv.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000688b.bin
7bd86b2a3b4598e20c6186126f3691225828f94d30fcca9643447fbbd087c88b
pdf-font-stream PDF embedded font (sfnt) at offset 0x688B 7500 bytes
font_01_sfnt_off00008612.bin
c22dd123b9f3278dbfeca328caa0ea141b3290b72b244a4dd97f29e3bcf51d6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8612 4156 bytes