Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f2a65d1348327a…

MALICIOUS

PDF

62.4 KB Created: 2020-08-23 05:22:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a2fec2fda72afb581ae07ac9d812ea54 SHA-1: e349ca0e9f4e4b43ae5f21cdd064599e5d2f5b7d SHA-256: a4f2a65d1348327ab9287617dc4bf552d186ee447301809822e01e0d14d923ce
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=gwent+decks+guide'. This URL is presented within the document body, disguised as a 'Gwent decks guide'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation or to host further malicious content. The ML classifier strongly indicates maliciousness.

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=gwent+decks+guide In PDF document text
    • http://files.truerainbow.com/uploads/1/3/1/4/131452817/mowiwi-fomaje-tugenuvekukelez.pdfIn PDF document text
    • http://files.ahellishplaceofangels.com/uploads/1/3/0/8/130813966/kubam.pdfIn PDF document text
    • http://damomegok.biopharm-medicine.com/uploads/1/3/1/3/131382595/7e64a20cbab874d.pdfIn PDF document text
    • http://files.dontfeeloldinside.com/uploads/1/3/1/3/131384635/kubagera.pdfIn PDF document text
    • http://remiga.widebaydancesupplies.net/uploads/1/3/1/3/131383483/sigagosunumizizaza.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/1/0440/6309/6984/files/6003782773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54903558396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/zoxanikabami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6770/2432/files/frette_sheets_outlet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9699/0105/files/28428369389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/1795/3433/files/3123234320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7844/9307/files/paychex_employee_information_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9171/2405/files/5822091016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4157/0463/files/chocolate_song_masstamilan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7369/2063/files/98725238223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76588695657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4042/1541/files/jquery_input_on_change.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_off0000ad86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD86 4956 bytes
SHA-256: 042589e97d83853765605e4d1e3858121b254a64248f6dbe8dd9d6b5aec0d9c2
font_01_sfnt_off0000be97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE97 14672 bytes
SHA-256: 2e61110e847a47e605657a8bede833e62ec99ff10379b7c17948068174aedac1

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