Malicious PDF — malware analysis report

Static analysis result for SHA-256 810cd50c99a3e710…

MALICIOUS

PDF

37.3 KB Created: 2020-08-20 15:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90e76bdf45951564df6d02c1bb688821 SHA-1: 037df60cdc38e55a2c626695416783c3cd08d78a SHA-256: 810cd50c99a3e71002d90c5b440370611f11bb07ef32485a9e6c67a0cb33c6f8
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify and other domains, suggesting a link farm for SEO manipulation or to obscure malicious redirects. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is presented in the document body as a manual for an Alcatel Lucent phone. This indicates a social engineering lure to entice users to click the malicious link.

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.com/pify?keyword=alcatel+lucent+ip+touch+phone+manual+4038
    • http://givuferil.kimberlylau.com/uploads/1/3/2/6/132681352/1849786.pdf
    • http://fivadofi.paloaltoglass.com/uploads/1/3/1/4/131407233/96cc54cf5aa302f.pdf
    • http://bafumag.abridgetoenglish.com/uploads/1/3/0/7/130775195/9197542.pdf
    • http://files.crazycowgirlentertainment.com/uploads/1/3/1/8/131856992/2c6307.pdf
    • http://files.murphyband.com/uploads/1/3/0/7/130775833/tunogovivud-dubeburajelote-sogipeba.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/babof.pdf
    • https://cdn.shopify.com/s/files/1/0437/6294/2106/files/vanipexi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/vezesozatexiju.pdf
    • https://cdn.shopify.com/s/files/1/0447/9886/9653/files/greenhouse_effect_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/7823/5798/files/biophysics_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/beyblade_burst_app_hack_apk.pdf
    • https://cdn.shopify.com/s/files/1/0432/0326/4667/files/booty_workout_plan_at_home.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3755/files/29323284525.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9652/files/parto_por_cesarea_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0429/8683/2035/files/65919944056.pdf
    • https://cdn.shopify.com/s/files/1/0431/5955/2166/files/duzorog.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_off000050ca.bin
ff13947e614820b8613ce370b4ae8f4a5ed565527bde1a8f16bcca5746f3e29f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50CA 5476 bytes
font_01_sfnt_off00006341.bin
3cbca8a0c3874611be98a6a2898e96bb6bd05935e71b12e67f33be1c79e1a328		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6341 10424 bytes

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