Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f913f7f0d5df3a9…

MALICIOUS

PDF

54.8 KB Created: 2020-08-26 20:23:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fc96a1d05d20847dbbfa98dbcc8c649d SHA-1: 3ea00847dcaab23ee544016763889b6ab3235ea3 SHA-256: 5f913f7f0d5df3a9bbd98a7964cae713b4e5bfc38feb720ae9bd35e5365ed72c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body, though heavily obfuscated, contains a reference to the same redirector URL. This suggests the PDF is part of a link farm or phishing campaign designed to drive traffic to malicious sites.

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.cc/pify?keyword=gander+mountain+dehydrator In PDF document text
    • http://files.strongbow.info/uploads/1/3/1/6/131606968/volurenifima.pdfIn PDF document text
    • http://files.d365promotions.com/uploads/1/3/0/8/130813988/169765.pdfIn PDF document text
    • http://files.maruf.eu/uploads/1/3/0/8/130813526/4085458.pdfIn PDF document text
    • http://files.malcolmcounseling.com/uploads/1/3/1/6/131606603/5215416.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0463/3634/4226/files/jakebojixamobubekara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/rajefipivopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6656/2462/files/aprender_a_leer_y_escribir_coreano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6992/3477/files/npav_antivirus_free_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7671/0563/files/lacrosse_certificate_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/554589668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6999/7217/files/border_design_for_a4_size_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/50523151160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7889/3214/files/zokedaguwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4719/7594/files/wugomebotosinorulalunuzob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6392/7203/files/75288903949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8168/6439/files/vugeda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fuwemosuwizukuxitakalav.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 5

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_off00008c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5D 4868 bytes
SHA-256: b950483a80ed99dd05ca8c64b22b5cedc164f3b2a2d99015740a536b7dd1b56e
font_01_sfnt_off00009cbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CBC 10204 bytes
SHA-256: e6b50f42894e5b0017c6bf08b10af4584784b860d32ea6f3890c448870821b13
font_02_sfnt_off0000bfab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFAB 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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