Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d92f883dd1fea14…

MALICIOUS

PDF

56.6 KB Created: 2020-08-19 06:47:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3540aab998fb2b0033761cff45309144 SHA-1: b45f81df7a37f2b66389eca7563c05e635e02f0d SHA-256: 5d92f883dd1fea14c86b8c123401a57ae450ca3159c16c88f1e2a1a351e2f5f9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to redirector infrastructure identified as malicious. The primary redirector URL, 'https://ttraff.ru/pify?keyword=fotoreportage+humberto+tan', is flagged as malicious and likely serves as a lure for phishing or malware delivery. The presence of a large number of external PDF links suggests a link farm or SEO manipulation tactic to distribute malicious content.

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.ru/pify?keyword=fotoreportage+humberto+tan In PDF document text
    • http://kezinarep.anajazphotography.com/uploads/1/3/0/7/130739732/durusuriwalavu.pdfIn PDF document text
    • http://files.flowartspace.com/uploads/1/3/1/6/131606630/tizufenazaj_miloda_kamurovisoriwu.pdfIn PDF document text
    • http://bunap.bbflockling.com/uploads/1/3/0/7/130775169/2621384.pdfIn PDF document text
    • http://fapox.cocoatreecarbondale.com/uploads/1/3/2/6/132682883/pagatujavuju.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/1/0434/3765/4178/files/criminal_law_amendment_act_2020_bare_act.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6701/3280/files/text_formatting_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/rirukezosekabigukefub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7669/7760/files/iata_city_code_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8773/8533/files/kolufenizota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/19181140131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5396/4712/files/mowaxekagiwofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/64371901563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2949/4940/files/aap_guidelines_for_diabetes_screening.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7900/7398/files/bullet_points_in_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47948794002.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 6

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_off000096fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96FB 5116 bytes
SHA-256: 3c7dd6fb7e7483e758ffab6e43a78c544cac49425a591813261484937b472a89
font_01_sfnt_off0000a840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA840 14668 bytes
SHA-256: f15a86d2bd5a58f4dbce0dbec7340e671799fbf9dfa43ac2ea996fb4e0ed9d53

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