Malicious PDF — malware analysis report

Static analysis result for SHA-256 83ed67285fbf0009…

MALICIOUS

PDF

42.2 KB Created: 2020-08-19 20:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7127ddb16f8390cec60940f5f4a0f343 SHA-1: 99e91c09cb970810e615d6e6a486b9b961c11a9c SHA-256: 83ed67285fbf000955562d3690ec8b922fed1e8d5859d70f71ba06b2bfd208ec
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=toxicology+report+kylie+rae+harris'. This URL is presented as a lure for a toxicology report, likely to trick the user into clicking. The document also contains a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination. No scripts were extracted from this sample.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/pify?keyword=toxicology+report+kylie+rae+harris
    • http://files.nphsjrwolfpack.com/uploads/1/3/1/4/131483253/pageponiputi_gosalobire_vopepas_fatibo.pdf
    • http://files.terrafuller.com/uploads/1/3/0/7/130739916/pisunumuno.pdf
    • http://files.lisamccafferty.com/uploads/1/3/1/3/131383664/bamibitamurata.pdf
    • http://pirur.marthomawashington.com/uploads/1/3/1/4/131437792/9214208.pdf
    • https://cdn.shopify.com/s/files/1/0429/7749/3146/files/65425228498.pdf
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/megetuvefitirikikiwuku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dobemajafapurotexujebo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7328/9894/files/sample_business_plan_construction.pdf
    • https://cdn.shopify.com/s/files/1/0434/0098/6787/files/livro_piscicultura_fundamental.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4280/files/dezaro.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9047/files/2020_hindu_calendar_september.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35209966956.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/46169501899.pdf
    • https://cdn.shopify.com/s/files/1/0434/4381/4556/files/likif.pdf
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/tamofegasade.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/32273491133.pdf
    • https://cdn.shopify.com/s/files/1/0435/4863/9391/files/23094107369.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_off0000658d.bin
c969a5d823eaf43f26a39a78f4eeefdb19b9d55e96660800bcdbe036f781e03d
pdf-font-stream PDF embedded font (sfnt) at offset 0x658D 5376 bytes
font_01_sfnt_off000077db.bin
c49e5c10bbac753ae12effddd4881e84f836041dcb5fa390ac9558ed73756385
pdf-font-stream PDF embedded font (sfnt) at offset 0x77DB 10572 bytes