Malicious PDF — malware analysis report

Static analysis result for SHA-256 31f9f0a2152ec8be…

MALICIOUS

PDF

43.4 KB Created: 2020-08-26 20:49:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 62d408218dfd0af1d5d076dd0ad9e44d SHA-1: 27c12cf71d6b04b7afb372498622bf11895043c8 SHA-256: 31f9f0a2152ec8be56a5a5a7c62d3930592ce9e7a7e2ab018953d56946d706d9
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=tenses+table+in+english+pdf'. This URL is presented within the document body, disguised as a PDF resource. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on various subdomains of .com domains. The primary malicious URL is the most critical IOC.

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=tenses+table+in+english+pdf In PDF document text
    • http://files.joyforthejourney.org/uploads/1/3/0/7/130776499/gaxuf_nezopa_jewawizoge.pdfIn PDF document text
    • http://pawuwez.cantonohiolandscaping.com/uploads/1/3/0/7/130776321/3998718.pdfIn PDF document text
    • http://files.epmachineshop.com/uploads/1/3/1/6/131637163/3613837.pdfIn PDF document text
    • http://files.pressurewashingtylertx.com/uploads/1/3/1/8/131871583/603116bde14.pdfIn PDF document text
    • http://files.taraflyart.com/uploads/1/3/2/6/132695372/pelasur.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/1/0436/5081/0014/files/75154733156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4634/6658/files/gender_essentialism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2025/3344/files/nipanilamegumudotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0988/4838/files/72643280517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4389/5966/files/1139554437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7222/5442/files/lojogukav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/adr_dangerous_goods_note_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/55715294435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/26052980694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/autism_behavior_checklist_italiano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0446/0188/files/ableton_live_crackeado_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1568/2717/files/what_does_lmao_stand_for.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 8

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_off00006bc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC6 5296 bytes
SHA-256: 67dd68ff196ad4e5002596682d6ae21c8ba7e099895158da2528d136c70c7180
font_01_sfnt_off00007dbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBB 10068 bytes
SHA-256: 972c53f4f4be98ebd01684881c7f3115482b87c7430c622ef0c0096670363083

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