Malicious PDF — malware analysis report

Static analysis result for SHA-256 33922ee3772e80bb…

MALICIOUS

PDF

51.1 KB Created: 2020-08-25 15:12:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e6ea1ab95466add7d20f7751deaafac SHA-1: b2ee0fdfdf912b33d1951653c8ecfa2d834e4c3d SHA-256: 33922ee3772e80bb013ab6ec6610642204946b423b1cdb5bfd4c9ed4a638dde1
194 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 firing indicating a malicious redirector link to 'https://ttraff.ru/pify?keyword=dinakaran+tamil+news+paper+pdf'. Another critical heuristic identified a PDF link farm, suggesting the document is part of an SEO spam campaign. The presence of multiple shopify.com links and one suspicious link from 'kowuri.baan-amorn.com' further supports this. The document body contains garbled text but includes the suspicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.ru/pify?keyword=dinakaran+tamil+news+paper+pdf In PDF document text
    • http://kowuri.baan-amorn.com/uploads/1/3/0/8/130814526/tevobikigewiwemanag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3387/7915/files/1038373946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2427/7923/files/13590852578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4854/3142/files/business_case_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8523/3304/files/61694574947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8637/9160/files/wusovelabixokuvode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/80623868724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8529/9876/files/raxogijukim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0636/9697/files/48058718303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1870/5306/files/9924276070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5399/8487/files/building_construction_download.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D19 5344 bytes
SHA-256: de3e2d2407be7f5fe8ddf29cdf439f3c59adbcc348f39f168f17f566f1f97208
font_01_sfnt_off00008f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F43 15936 bytes
SHA-256: 1299f627f1c380efb12127671e8f108f4c1469688f1f753bea30dbfc4b37c30e

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