Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bad75c45262f7c0…

MALICIOUS

PDF

48.0 KB Created: 2020-08-30 22:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52ba631c25593f11d79f25679adedca8 SHA-1: cd829d1bf2aac0556d2567051f2fbf696c85747b SHA-256: 7bad75c45262f7c0e7fcf968a8c1ddd66fcb0b2e70b218826c2bb6ff225e097a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'Ford 4000 tractor parts' and the malicious URL. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, suggesting an attempt to disguise malicious activity within a large number of seemingly benign links. The primary malicious IOC is the redirector URL.

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/wix?keyword=ford+4000+tractor+parts
    • https://cdn.shopify.com/s/files/1/0432/6601/5395/files/amino_acid_metabolism.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/vileroxiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/1257/9747/files/all_shapes_formula.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/aston_villa_newspaper_reports.pdf
    • https://cdn.shopify.com/s/files/1/0437/7670/4664/files/51479263788.pdf
    • https://static.usrfiles.com/ugd/b8c837_855ca7ec8356434e95e65ac1894efbc8.pdf
    • https://static.usrfiles.com/ugd/9ea91e_3fa9c61b981147b890cd575cde805aea.pdf
    • https://static.usrfiles.com/ugd/b8c837_f00786febb774dfcb39f79a1bc40f0bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_d9d831bda95e4f87ae51f78058eb8043.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/carpentry_workshop_lab_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/2682/4859/files/68728199145.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/29878061118.pdf
    • https://cdn.shopify.com/s/files/1/0440/8056/2326/files/canadian_passport_renewal_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/xilasujef.pdf
    • https://cdn.shopify.com/s/files/1/0429/7474/0639/files/alternativas_a_netflix_gratis_android.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/dadazigusevinekiki.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_off00007d1f.bin
1f3a7568e5b6fb9df0c9698228578b4a4facec756bd3485b5912cdfe9960d803		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1F 5220 bytes
font_01_sfnt_off00008ef2.bin
5a0e49e1785d38fb5a4fe3e95ba10c0033fcb5298f3cd4607fb435507998ecaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF2 10688 bytes

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