Malicious PDF — malware analysis report

Static analysis result for SHA-256 696f7765368f7480…

MALICIOUS

PDF

43.7 KB Created: 2020-08-28 10:03:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8700d3a3ba4e99b098f92c3b66d547d SHA-1: 9392b1bb1b44f5fa19a9d8235416edfe8ccc91e4 SHA-256: 696f7765368f7480f4398a2770a517bf861ba2343d0fd0bfbe67503bf3d9a9de
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is associated with an advance-fee scam lure. The document body also contains the same URL and text related to downloading PUBG mobile, suggesting a deceptive lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=download+pubg+mobile+apk+data
    • http://files.brittpropack.com/uploads/1/3/0/7/130775084/3933642.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0452/6574/8130/files/the_adventures_of_tom_sawyer_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0434/2372/7783/files/damobarir.pdf
    • https://cdn.shopify.com/s/files/1/0433/1274/2550/files/96729407159.pdf
    • https://cdn.shopify.com/s/files/1/0439/0636/7656/files/invitation_to_tender_cover_letter_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/3545/9738/files/52180049444.pdf
    • https://cdn.shopify.com/s/files/1/0427/5834/0774/files/tadoxedakupagasije.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2859/files/fimelafejilejibasisiruzim.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/informal_agents_of_social_control.pdf
    • https://cdn.shopify.com/s/files/1/0430/7261/8657/files/arch_linux_pulseaudio.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dd9.bin
4dfb5ea31cac139b11584317fecf989486c31328573c707c9234aee5a0b50e69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD9 5184 bytes
font_01_sfnt_off00006f71.bin
fa19e5da85db2e3d139fe443ae56e9b04de29e5944996819e43083b533f58caf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F71 10796 bytes
font_02_sfnt_off00009456.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9456 4324 bytes

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