Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc31e31d6e3af635…

MALICIOUS

PDF

71.3 KB Created: 2020-08-15 01:12:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d9907b433a82b951345543ea12b1e9d SHA-1: 648400d01069c6a0696f7c637d783b812898e1ce SHA-256: cc31e31d6e3af635db3e6d914d5e89d925a24d32fea2177b472bd093a95437f5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wb?keyword=doa%20walimatul%20khitan%20pdf', which is flagged as malicious. This suggests the PDF is designed to trick users into clicking the malicious link, likely leading to further compromise.

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/wb?keyword=doa%20walimatul%20khitan%20pdf
    • http://files.breadoflifelynchburg.com/uploads/1/3/1/1/131164534/bafuvuzuzufutivuduj.pdf
    • http://files.inyourheartbooks.com/uploads/1/3/0/9/130969032/6e15b.pdf
    • http://tuver.mccallinnovations.com/uploads/1/3/0/7/130776603/kimusimajakor.pdf
    • http://files.redtreefarmstead.com/uploads/1/3/0/7/130775221/pudowunag-sexidazaxete.pdf
    • http://jedixifa.blackpackingxyazzy.com/uploads/1/3/0/8/130813547/kafinaxu_pedovumam.pdf
    • https://cdn.shopify.com/s/files/1/0429/9037/0975/files/security_camera_installation_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/3636/8283/files/bofusegikefikunamonunidon.pdf
    • https://cdn.shopify.com/s/files/1/0432/4392/9757/files/500_essential_words_for_toefl.pdf
    • https://cdn.shopify.com/s/files/1/0437/8384/8097/files/gokanap.pdf
    • https://cdn.shopify.com/s/files/1/0431/4320/0929/files/nefow.pdf
    • https://cdn.shopify.com/s/files/1/0437/7785/1550/files/arabic_keyboard_software_free_for_laptop.pdf
    • https://cdn.shopify.com/s/files/1/0428/6673/7311/files/87999674790.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7911/files/99793287489.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/31092484350.pdf
    • https://cdn.shopify.com/s/files/1/0432/5185/9611/files/komonagav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7578/7169/files/short_graduation_speech_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/30580242176.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000d4a9.bin
d1c3e0015ba6e5eb9323fc57f6cd6a16446d8043b07773199ec7dada05981ed3
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD4A9 25812 bytes
font_00_sfnt_off0000a1f3.bin
c985542beb71efbc5cb2d6c88e32814cd23ccc5bdd78406ff818fa20c8d6a8aa
pdf-font-stream PDF embedded font (sfnt) at offset 0xA1F3 4924 bytes
font_01_sfnt_off0000b29c.bin
f8743900da85269714c6edb7cb954ca6ad148a9ee8d47d867a358fbf643fd882
pdf-font-stream PDF embedded font (sfnt) at offset 0xB29C 9964 bytes
font_03_sfnt_off000101e4.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x101E4 4324 bytes