Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1f154368b05e5e4…

MALICIOUS

PDF

42.7 KB Created: 2020-08-26 23:51:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 795f3ff441a99e100912a8a7a4d0aac1 SHA-1: f7809982299deb7e31f866b89393e5718a0ed197 SHA-256: b1f154368b05e5e4951ef7ef40054bd80046d9e616d4a74ae38ff188a14017ad
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 shopify.com domains, but one critical heuristic identified a link to a known malicious redirector. The document body itself is heavily obfuscated, but the presence of the malicious redirector URL and the link farm heuristic strongly suggest a phishing or malware distribution attempt. The primary malicious URL identified is https://ttraff.com/pify?keyword=historia+de+las+razones+trigonometricas.

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.com/pify?keyword=historia+de+las+razones+trigonometricas
    • http://zafute.dawnmariehamiltonclarinet.com/uploads/1/3/1/1/131164250/pedepusof-lamosesawuboli-kekerizajes.pdf
    • http://files.theorwellscommunityshop.co.uk/uploads/1/3/0/9/130970003/febus-bolepevekixep-ronanukefijuzi-gefubos.pdf
    • https://cdn.shopify.com/s/files/1/0463/8883/8555/files/14749256002.pdf
    • https://cdn.shopify.com/s/files/1/0432/7895/8758/files/gabasuxarupu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5547/1006/files/winitadorubefesilamapudon.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/kabhi_alvida_naa_kehna_lyrics_video.pdf
    • https://cdn.shopify.com/s/files/1/0434/9408/0677/files/zubedumawa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7282/files/26629226061.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/93757189568.pdf
    • https://cdn.shopify.com/s/files/1/0433/5163/8175/files/safix.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9432/files/17903990057.pdf
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/perimetry_interpretation.pdf
    • https://cdn.shopify.com/s/files/1/0433/2630/8510/files/getebepijerowa.pdf
    • https://cdn.shopify.com/s/files/1/0436/6408/1046/files/binebefiliperutewi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38804475130.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_off00006710.bin
350b9314a10bec7eca04bb264b4783c9d4b87d1a19c0f6fe6138d26fa8c660d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6710 5268 bytes
font_01_sfnt_off000078dd.bin
19d7cd11369ad0f7b2cff5f1f4179a245ce99df75ebab816876b1507a0696058		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78DD 10872 bytes

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