Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a802141f410f034…

MALICIOUS

PDF

45.0 KB Created: 2020-08-24 02:16:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d323667d0c126bd6b450bfb84ffe06ac SHA-1: 3df913532bed157e4a852aa6cf249975fc384a06 SHA-256: 3a802141f410f0346bf6bfa032b6fde84cf40dcdab19ca0cae6e64eba1078177
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a user guide for an HP printer. The link leads to 'ttraff.ru', which is flagged as malicious. The document also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation to increase visibility. The presence of a 'download button' heuristic further supports the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=hp+deskjet+2622+user+guide In PDF document text
    • http://rolibemef.timkwrites.com/uploads/1/3/0/8/130814328/9764270.pdfIn PDF document text
    • http://files.tdmxt.com/uploads/1/3/2/3/132303282/jolaga.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/1/0433/0687/7080/files/76222514852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/6695846489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/19011720263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/11643284743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4573/9941/files/82654441847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25006313747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9139/2664/files/chuyn_file_sang_excel_min_ph.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8349/6600/files/82117755221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/sibiwefisunubiwepegeweja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/7134/9412/files/mabemanezeranezogila.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CE 3724 bytes
SHA-256: 5f506f96885c68285abb08013964e969243e5a1cdb180af6bb27fe8127c8fd8a
font_01_sfnt_off0000700b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x700B 5272 bytes
SHA-256: eac5e4d23e37a4965200812ddcc7775a3bccdcef467d6619806cc24b7642149f
font_02_sfnt_off0000821a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821A 11020 bytes
SHA-256: e7914f7e7d050ff49d5ebc3d787ba079653faff96c061111d498a15a2489f66c

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