Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc9271afd2aef902…

MALICIOUS

PDF

46.2 KB Created: 2020-08-14 19:53:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 436831a128cfdbf152cbdfc3f1c7b330 SHA-1: d7c74db4b3bbcc4844fb9ef1cd78f6c0702594a6 SHA-256: fc9271afd2aef9020ef0809d21aadda2c9ff71f1b934d30b9a5a77909d2883f1
202 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same malicious URL and references a software crack, suggesting a lure for malicious downloads. The presence of multiple embedded links to potentially untrusted domains further supports a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=catia+v6+full+crack+64+bit In PDF document text
    • http://files.duke-consult.com/uploads/1/3/1/8/131872273/kavaxofajag.pdfIn PDF document text
    • http://zowuduse.accessabilityfest.com/uploads/1/3/2/6/132681670/zimebupowakafuma.pdfIn PDF document text
    • http://zasimuxod.themerchantsguildstore.com/uploads/1/3/1/6/131606617/lenedujuxob-lugiguforu-matotuli.pdfIn PDF document text
    • http://files.joeridubbe.com/uploads/1/3/1/4/131437657/954750.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/1/0433/0536/9758/files/biosynthesis_of_ephedrine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4066/9849/files/38084356076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4513/3207/files/fsc_biology_book_1_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4485/2127/files/lovastatin_davis_drug_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2758/5430/files/fipijutemofemeteseto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7467/4083/files/78291278861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7799/0568/files/wuwuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/72496529570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7945/7173/files/9096020522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8659/3694/files/briquette_machine_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9343/3246/files/67751894661.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6683 4776 bytes
SHA-256: c1e05abfc0897778284e9bb419eb9cc1ee9f8df06d5acae2fbe5344eb724d7c9
font_01_sfnt_off000076e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E5 10912 bytes
SHA-256: b76509fc88576ad74675bcec89a800d188570a1601f75c5428494aaa28e96489
font_02_sfnt_off00009c0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C0C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c