Malicious PDF — malware analysis report

Static analysis result for SHA-256 366fd4740ca7e02b…

MALICIOUS

PDF

43.8 KB Created: 2020-08-22 14:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 838ed06052fe7d29aef9d94c46cd66b5 SHA-1: c0ada342485ebd1523192794a905ccfb641fc238 SHA-256: 366fd4740ca7e02bde9aecd143e3cd0d483a6bd5f68a3dd9547a65e9974c3f52
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one heuristic identifying it as a PDF link farm. The primary link points to a known malicious redirector. The document body contains garbled text but includes the URL 'https://ttraff.ru/pify?keyword=anarchy+reigns+pc', which is flagged as malicious. This suggests the document's purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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=anarchy+reigns+pc In PDF document text
    • http://files.accountinguci.com/uploads/1/3/0/8/130873907/wafizelov-josekijaze.pdfIn PDF document text
    • http://files.cvhs-bands.com/uploads/1/3/2/6/132682806/644423.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/1/0434/3899/7669/files/17059886338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8763/4338/files/fibatokejaname.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1410/2941/files/5316427934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8179/2664/files/60934334849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3534/4539/files/carbon_dioxide_lewis_structure_formal_charge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3278/0701/files/theory_of_continental_drift.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6744/5141/files/bipoloko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4486/4149/files/swing_components_in_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5503/9135/files/82123105981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4501/9045/files/cerebral_palsy_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/frontiers_in_immunology_guide_for_authors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1290/5370/files/43117881404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/bupovevolaritixi.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_off00006d03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D03 5256 bytes
SHA-256: f921cb15a763d9acfa8b71783f8d949dd4dff12f6249a3e11ab2fb2995519993
font_01_sfnt_off00007ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDE 10436 bytes
SHA-256: 18128939b2f24386ea93da40c91254a6a0ed2bbe48f508487856ea3c22797a56

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