Malicious PDF — malware analysis report

Static analysis result for SHA-256 db64bc98fbd8ad19…

MALICIOUS

PDF

45.1 KB Created: 2020-08-10 19:24:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cab9be5d56a5fe5c21976a27e570a01e SHA-1: 3d4124e0555c55abc6bf9ab3d45932e84c6fe565 SHA-256: db64bc98fbd8ad198ac50e97a03a3a9e1b8b91669a6ce3ab8dd173f72af0251f
194 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 external PDF files hosted on various domains. One of these links, https://ttraff.com/pify?keyword=system+analysis+definition+pdf, is known to redirect to malicious infrastructure. The presence of numerous links suggests a link farm or SEO manipulation tactic, potentially to distribute malicious content or improve search engine ranking for malicious sites. No scripts were extracted from this sample.

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.com/pify?keyword=system+analysis+definition+pdf In PDF document text
    • http://files.kumquatcoffee.com/uploads/1/3/0/8/130874369/xijasizikozasov.pdfIn PDF document text
    • http://files.homegrownhighways.com/uploads/1/3/1/3/131380773/xiwemu.pdfIn PDF document text
    • http://files.microcosmpodcast.org/uploads/1/3/2/6/132682232/a9db38ac7ad.pdfIn PDF document text
    • http://files.hicksandsonsjunkremoval.com/uploads/1/3/2/7/132740237/239841f.pdfIn PDF document text
    • http://files.marengowesleyan.com/uploads/1/3/2/6/132681602/favexakabaseref.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/1/0428/9835/8432/files/81256704061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8006/4936/files/sejesotipofez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5287/5432/files/lord_you_are_always_here_with_me_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9695/7343/files/42427022104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7437/8142/files/blue_eyes_technology_in_ieee_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/fetudim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2536/7194/files/multivariate_analysis_using_spss.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2919/8998/files/gokaniniborajadawidajud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3798/1852/files/40296494839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6399/1717/files/80116276955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/dujavig.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 8

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_off00007281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7281 5296 bytes
SHA-256: 452718b29169619d67de2b6a89ac9ca67958aca0090bb9710a62dbb1cecd8961
font_01_sfnt_off00008478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8478 10372 bytes
SHA-256: 57dec6a99f666aae695b18f8c247d80e5bf15a35a9d864cc98fbe48ac3f47394

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