Malicious PDF — malware analysis report

Static analysis result for SHA-256 014dc664bcc65793…

MALICIOUS

PDF

40.2 KB Created: 2020-08-18 16:40:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fa3e99e5b23b75bf7056048e854bcfb SHA-1: 5a10a25839583b99b93c2024c8e852a31ad4d478 SHA-256: 014dc664bcc657931d680c8cd8ff2f607d094529c981b611be1249787fec3a9e
154 Risk Score

Malware Insights

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

This PDF document contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though partially corrupted, includes the same URL and a keyword suggesting a lure. The PDF also contains a large number of external links, many pointing to Shopify, which is indicative of a link farm or SEO manipulation tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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 https://ttraff.com/pify?keyword=free+filler+paper+template
    • http://files.wpea.org/uploads/1/3/1/4/131437660/kamibu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0439/1629/6360/files/binary_to_decimal_conversion_questions.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6264/files/dekagiwebasigutitida.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5396/files/94215443964.pdf
    • https://cdn.shopify.com/s/files/1/0432/6490/1270/files/44601764733.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/green_day_oh_love_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0438/3296/7318/files/31413050366.pdf
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/tutorial_de_autocad_civil_3d_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5309/files/98338654040.pdf
    • https://cdn.shopify.com/s/files/1/0429/6926/8373/files/4786966572.pdf
    • https://cdn.shopify.com/s/files/1/0438/4253/5574/files/plc_scada_lab_manual.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006037.bin
f1170401e497b6a13da27ef8de448d661d0c8a9cc7f907bf6a8cb077c8baceb4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6037 4824 bytes
font_01_sfnt_off0000708a.bin
0c45713498447e0f8a748ab2c21e973684df4bc35ec41b47e19752c09537319e
pdf-font-stream PDF embedded font (sfnt) at offset 0x708A 10588 bytes