Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a8d7e37134fc4af…

MALICIOUS

PDF

47.6 KB Created: 2020-08-25 23:27:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7f14e2cd865a5bb14c861f27a7ea579 SHA-1: e0edfe578b8dea6181dd68545d5584acac0e8f76 SHA-256: 4a8d7e37134fc4afcbc3df93d988e8a3b56c070f17197443e3c9fca1578f233c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, a common technique for SEO link farms and redirecting users to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifies a link to 'ttraff.ru', which is known malicious infrastructure. The document body, though heavily obfuscated, contains the same lure text and URLs, reinforcing the malicious intent. No scripts were extracted, but the PDF structure and link farm indicate a phishing or redirection 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=banner+saga+builds In PDF document text
    • http://wazevut.rockymtnprop.net/uploads/1/3/1/6/131636954/72f798d5752.pdfIn PDF document text
    • http://files.connemaradancers.com/uploads/1/3/0/8/130874205/6208421.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/1/0431/6826/8456/files/civil_engineering_textbook_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7017/6928/files/sheet_music_chopin_prelude_in_e_minor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1286/3638/files/dsssb_je_answer_key_17_19.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/33463799934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0456/4484/1127/files/jeevan_amar_plan_855_proposal_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/9916/0475/files/budovora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6686/7362/files/worksheet_ordinal_numbers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87913440599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6955/4329/files/nufasirezanijuzivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8597/8013/files/brche_multiplikation.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F80 4876 bytes
SHA-256: ccd06d851fbf6c57a37b626b8c4a8945118c2395a7f414efdcb762c6a41722f1
font_01_sfnt_off00008004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8004 10444 bytes
SHA-256: a1c21f1d9a25b84a36579d2f14e0656837e59c85ad9852e117afecaaf99e87fa
font_02_sfnt_off0000a3e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3E7 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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