Malicious PDF — malware analysis report

Static analysis result for SHA-256 60c08ce87108732e…

MALICIOUS

PDF

45.1 KB Created: 2020-08-10 17:40:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa5156ccb2feaf7febfb2f254f294286 SHA-1: 0db9ba5d27d447b80761443a352fc5a79a71cbf8 SHA-256: 60c08ce87108732e4b689ecb14a0fa1787c6160bea40c35f3f8eb10487f85987
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.cc), which is likely the primary malicious payload delivery mechanism. The ML classifier strongly supports the malicious verdict, and the presence of embedded URLs confirms the document's intent to direct users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=steelseries+arctis+7+manual+pdf
    • http://files.northstaranimalcomm.com/uploads/1/3/1/1/131164081/4084104.pdf
    • http://files.glowwithflow.com/uploads/1/3/1/4/131406365/merabomemutoze-vinukorevif-pupapafudiko.pdf
    • http://files.lelrr.org/uploads/1/3/0/7/130740493/686c9a7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/pumijigugixulakovoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/34772531671.pdf
    • https://cdn.shopify.com/s/files/1/0428/8705/3471/files/86579512317.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/lukerumenikunija.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/72046329151.pdf
    • https://cdn.shopify.com/s/files/1/0438/3634/2434/files/farosijasosi.pdf
    • https://cdn.shopify.com/s/files/1/0452/2138/0247/files/english_suffixes_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2557/files/88454269517.pdf
    • https://cdn.shopify.com/s/files/1/0429/7143/1065/files/pawujamurufijobenejuketov.pdf
    • https://cdn.shopify.com/s/files/1/0433/7605/0330/files/fopufopukuripatuzej.pdf
    • https://cdn.shopify.com/s/files/1/0435/8999/2605/files/15369867585.pdf
    • https://cdn.shopify.com/s/files/1/0433/7133/1742/files/zitadopudeji.pdf
    • https://cdn.shopify.com/s/files/1/0440/6503/0309/files/vmmxx_fact_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/0958/8897/files/80293367335.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006679.bin
c24b671e09d6be7d1c6b1ed96fd344c52cf82d6b4c2ddcb42ad152c51a3dd70a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6679 5484 bytes
font_01_sfnt_off000078fc.bin
e94caa4fabf4f8fc1bf5be931f95f4703bfc9438bfef6285093b0679c4fa52d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78FC 2132 bytes
font_02_sfnt_off0000825e.bin
46e56667eb198ff4d1e0bae58810c55ff8d7f5ce5dfae81d6068848c1ac2dd83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x825E 10232 bytes

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