Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbb253193d0f5f4d…

MALICIOUS

PDF

51.7 KB Created: 2020-08-08 16:59:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ded77f7263e5fa422b4f278d3e67c8b SHA-1: f79b8284e68cc57f54466aa95016bffaa9292ceb SHA-256: cbb253193d0f5f4d951df9d95efa508c78cd9071d6808bb9d644e5db6b7adf9e
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure at https://ttraff.cc/pify?keyword=muerte+celular+apoptosis+y+necrosis+pdf. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. The presence of a link farm further supports this malicious intent.

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=muerte+celular+apoptosis+y+necrosis+pdf
    • http://files.iamphoto.co.uk/uploads/1/3/0/9/130969241/gorenorowi.pdf
    • http://files.marineconservationlab.org/uploads/1/3/1/8/131857650/vulobokix-lobodolam-fotuwa.pdf
    • http://files.rodandgunclubofnewbedford.org/uploads/1/3/1/8/131871740/656691.pdf
    • http://revukek.evolotionbody.com/uploads/1/3/0/7/130776460/8212591.pdf
    • https://cdn.shopify.com/s/files/1/0438/2697/0786/files/all_bangla_boi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/discovering_biological_psychology_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/3934/2248/files/wewadidevupefasutivokuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5360/files/define_newspaper.pdf
    • https://cdn.shopify.com/s/files/1/0427/9602/3975/files/nunibuxunisunawuwe.pdf
    • https://cdn.shopify.com/s/files/1/0432/1941/9291/files/74930440706.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/meragavafeduxilaxopuxaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/juzagekupakavewadefo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/suminoturopebikid.pdf
    • https://cdn.shopify.com/s/files/1/0437/1342/9655/files/types_of_central_air_conditioning_system.pdf
    • https://cdn.shopify.com/s/files/1/0435/9510/4418/files/57061558422.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_off000080eb.bin
7bd8fea285fac23d560d783ffccb5fe28dc0389c97cf8607a0e82cbe64afd96d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80EB 5256 bytes
font_01_sfnt_off000092ef.bin
da49f7f909f733864fc6dce3023e79c706f97900427c6121ea7a010f814315b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92EF 14480 bytes

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