Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b175f2744ca16f9…

MALICIOUS

PDF

34.7 KB Created: 2020-08-10 04:48:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3dc4661b2c4bd8fc82b45899663eaa19 SHA-1: 4f1fab5f46253edeaf5841af114073346bb29975 SHA-256: 4b175f2744ca16f912759bfd65c1b7304c3a88b9faa5966ecb79d1cabed882c0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=bibiliya+yera+pdf'. The document body, though heavily obfuscated, contains this URL and other links to Shopify domains, suggesting a link farm or redirection scheme. The presence of a malicious redirector points towards a phishing or malware distribution attempt.

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=bibiliya+yera+pdf In PDF document text
    • http://razogilug.monetaventures.com/uploads/1/3/0/7/130776485/341fa8.pdfIn PDF document text
    • http://files.whasociety.org/uploads/1/3/1/4/131410485/warupefudopazureteg.pdfIn PDF document text
    • http://files.natickpegasus.org/uploads/1/3/0/9/130969061/1340435.pdfIn PDF document text
    • http://files.northernplainsheritage.org/uploads/1/3/1/4/131453268/3622259.pdfIn PDF document text
    • http://files.optimalacademyinc.com/uploads/1/3/2/7/132712315/5909d2f05edf47.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/1/0435/1872/2207/files/rovanotom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8022/0826/files/resuwamurapamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/93674642944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7491/0376/files/jafokax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3907/2161/files/degilewarusugumekelof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3396/8287/files/skf_ball_bearing_catalog_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/zebezowugipowidusidij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6182/1092/files/73799744213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0737/7567/files/semesafatofolemazexowewet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5789/5841/files/56999974903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4865/5265/files/fozixukibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/85073510045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5318/7223/files/voicemeeter_banana_hotkeys.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2467/0105/files/gorefukezi.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A40 5148 bytes
SHA-256: c4db627eb9c40223f19e17b5ceaeef3a779979d4e13556ca038f07795c3e4104
font_01_sfnt_off00005bda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDA 10036 bytes
SHA-256: d92e035a7b06aafc79d321adbe6bdf640d1034b53e3c1d5ee009364252df1689