Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f6eaa77bec05127…

MALICIOUS

PDF

43.2 KB Created: 2020-08-12 20:09:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8429fc35ee79f9979362d48d19f6bb03 SHA-1: 619a103eae5b04c4d8c05c7fd06b74420e94899b SHA-256: 9f6eaa77bec05127e92c0d77e1fd2f31f6707353f605c495668dd56f682e65fc
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) and other suspicious domains. This indicates a link farm designed to obscure the ultimate destination and potentially distribute malware or phishing content. The presence of a malicious redirector link is a critical finding.

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=pdf+file+download+from+link
    • http://berubuj.is-tbc.com/uploads/1/3/1/4/131453540/guterolezug-givet-sopes.pdf
    • http://kogamoliw.fuerschbachpublishing.com/uploads/1/3/1/4/131482976/zadowe.pdf
    • http://files.steaksnlobsters.com/uploads/1/3/0/8/130874317/7203092.pdf
    • https://cdn.shopify.com/s/files/1/0449/3633/1419/files/back_to_school_night_sign_in_sheet_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/8615/1833/files/21203976635.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/futimijaxudinekegigo.pdf
    • https://cdn.shopify.com/s/files/1/0436/3137/8590/files/7895946362.pdf
    • https://cdn.shopify.com/s/files/1/0437/2804/4193/files/enrique_iglesias_tonight.pdf
    • https://cdn.shopify.com/s/files/1/0437/7355/8935/files/argan_arte_moderno.pdf
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/6897101412.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/dobowesutudexesuz.pdf
    • https://cdn.shopify.com/s/files/1/0437/7752/3873/files/zanukanir.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37357510366.pdf
    • https://cdn.shopify.com/s/files/1/0435/7075/7795/files/download_ryanair_boarding_pass.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/88242651852.pdf
    • https://cdn.shopify.com/s/files/1/0439/3956/1630/files/levijigeror.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74832969368.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_off00006c25.bin
48ceb2f6513ebfc598a48f5844580be40f42bf356e662fabae86d31e5cf76791		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C25 5032 bytes
font_01_sfnt_off00007d3c.bin
f217ee237ceeab27707230ffd26ce97431a84245dd5c7a1b98fb49fef51c6fe0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D3C 10164 bytes

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