Malicious PDF — malware analysis report

Static analysis result for SHA-256 61fda4c31924a8eb…

MALICIOUS

PDF

38.0 KB Created: 2020-08-17 02:39:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c22ffc251dc51b1ab2e9f5ad6183bb7f SHA-1: 2e714fbc6e6260b5a88bd46058491789aa8110f3 SHA-256: 61fda4c31924a8eba2d5bbc8bfd32851aff9e98019f69b67078be54f14e0c0ce
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one identified as a malicious redirector. The document body also contains a link to 'ttraff.cc' which is likely part of a link farm designed to improve search engine rankings for malicious content. The presence of a 'download button' heuristic further suggests a deceptive 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.cc/pify?keyword=debut+video+recording+software+free In PDF document text
    • http://files.apachetruckclub.com/uploads/1/3/1/4/131438611/zemesenonow.pdfIn PDF document text
    • http://files.paintwithjade.com/uploads/1/3/1/4/131453384/gogojurezexev.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/20880330559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5393/0904/files/breeds_of_cattle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/relivupedipivojesizokepex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72890356131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0024/8995/files/99543638257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7985/0398/files/finding_dory_movie_in_isaidub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/63442129382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/bhajan_lyrics_in_kannada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8831/3506/files/dell_emc_nx3240_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/6886345443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/1674430799.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_off0000557a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x557A 5448 bytes
SHA-256: fa7f5ef5eef09f5e574b1e6e542faacc4a6869c06323fbaa675c02e8a9e452d6
font_01_sfnt_off00006827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6827 10416 bytes
SHA-256: e67ba38b22a36ccf4e32883f95dee47a1139c795f239b36b12030a7103cfaca6

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