Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf0e35e912269f58…

MALICIOUS

PDF

46.5 KB Created: 2020-07-31 15:25:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a96a0377cc4e93f86baf6ccb888942d5 SHA-1: d919978c058ad94abb8ccf126a660f53ac8ed0bc SHA-256: bf0e35e912269f58e46e79d7114363df89b955ff388fd64867ccbbc1057e71fc
194 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.ru), suggesting an intent to lead users to harmful sites. The ML classifier also strongly flagged this PDF as malicious. The document body is heavily obfuscated and does not provide clear textual clues, but the presence of a large number of external links is a strong indicator of a malicious distribution or phishing 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.ru/pify?keyword=sonic+2+xl In PDF document text
    • http://files.theraceshack205.com/uploads/1/3/2/3/132303269/bomenatito_kuvefuvir_nidujabofop_gusepis.pdfIn PDF document text
    • http://files.colecoach.com/uploads/1/3/1/8/131871687/3308f.pdfIn PDF document text
    • http://files.leapingharedesign.co.uk/uploads/1/3/1/4/131406202/6738836.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/1/0434/4466/6529/files/44790545181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/fewokawozoxisexemabife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gejazopemovaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5611/0487/files/36516217773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/jotodoninidimitani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1601/2455/files/3677161554.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9286/9281/files/59908457510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/87642620895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4913/9880/files/wivipefowulasoragoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5456/3477/files/wirepanivugiguvuvejasak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/fezesogesilukadofabimanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8854/2872/files/69190253464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3006/7865/files/bagugu.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 4

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_off0000713d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x713D 4204 bytes
SHA-256: 66bd78fd8143dc52eb409bc0f3f2418f2dcea46c5481da48ef5cf59a303c7eb3
font_01_sfnt_off00007f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6B 14692 bytes
SHA-256: 44746b91e876f33ba9dee524194473257c25f9effdc4d8f55b86611018a437fc

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