Malicious PDF — malware analysis report

Static analysis result for SHA-256 27a2e97b2441a873…

MALICIOUS

PDF

42.4 KB Created: 2020-08-01 04:38:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f759eecd361250de2694c9a83078fd43 SHA-1: 7032f6ec67d6b8b63d831615fc52fd1be11a1131 SHA-256: 27a2e97b2441a873a59fe0c2fd17469ece9d81687f52d2793a22d13e618444c2
152 Risk Score

Malware Insights

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

The PDF contains a high density of external links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is also present in the document body. This redirector is likely used to obscure the final malicious destination. The document's content and the presence of the malicious redirector indicate a phishing or scam attempt.

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=create+fake+cell+phone+bill+free
    • http://files.msowensspeakslife.com/uploads/1/3/0/8/130873921/nudego_tilefedifoso_ziwoveraxufupov_romidugiminor.pdf
    • http://files.smokedearthceramics.com/uploads/1/3/0/7/130739776/fijipebanimatanig.pdf
    • http://files.alplatocpadmore.com/uploads/1/3/1/4/131452733/didezulisetali-difevasezibad.pdf
    • http://files.villa-anggrek.com/uploads/1/3/1/3/131379371/difisudenaborex.pdf
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/fe_other_disciplines_review_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5127/files/44278837595.pdf
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/rigivefawidiloz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/229905594.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8402105605.pdf
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/45365673737.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/metutoroxomapopu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4659/2924/files/60836397564.pdf
    • https://cdn.shopify.com/s/files/1/0430/9712/9109/files/jobexazezevaxomijavazagid.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70945418412.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/fuvupafalibonoma.pdf
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/43719599322.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/nasugavosuwomokugezadub.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_off00006786.bin
fcedb64d3cf53a756d491d6f5e98080dca0308e90d338d7ab56dc7370f7e9d2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6786 5036 bytes
font_01_sfnt_off000078a2.bin
980caf3d2506fed78430fad6bb3daeb894ef925f35bcd3d382c61419c84c1a92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A2 10636 bytes

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