Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f65bf966df7d3b4…

MALICIOUS

PDF

111.3 KB Created: 2020-08-06 21:08:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f94c8a094034cba33fcc5ad28bc6b8e0 SHA-1: 3abaa9b1e8bcfe852d680565c0d48a4e2eeb7d06 SHA-256: 6f65bf966df7d3b4f5a42aefbde64b4de65ca80101621510d578690fd1eb088d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector infrastructure identified as malicious. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the primary goal is to redirect the user to malicious content, likely for phishing or malware distribution.

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.cc/pify?keyword=anthropogenic+activities+and+their+impact+on+environment+pdf In PDF document text
    • http://files.thespringerstudio.com/uploads/1/3/1/4/131453539/3a1c759afa.pdfIn PDF document text
    • http://files.fibrechick.com/uploads/1/3/2/6/132681812/gedivuzexix_zukovelotewe_zelepev.pdfIn PDF document text
    • http://files.teamcanadabc.ca/uploads/1/3/1/8/131856185/c9d42.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/1/0431/6761/3082/files/mevuworobexeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7673/8462/files/13987035884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2837/2904/files/alimentos_ricos_em_fibras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5982/0182/files/ccny_physics_208_lab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/types_of_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8765/1235/files/11365186596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/nabafizifetesug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2534/9273/files/69857536919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3584/5017/files/flash_video_downloader.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7328/9888/files/wenerosijasuvawevunatuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0364/0993/files/51378717526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7111/8235/files/46199703766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8988/files/20812453556.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000177ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x177AE 5584 bytes
SHA-256: d86af2c51f9566b237b0344b3bce162df2d0edc89b99a36a90e52611b04534da
font_01_sfnt_off00018a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A92 10656 bytes
SHA-256: 29175bb3a90c8e8084c014d6d7ef4e95c7cfcd10c8c88413e6005c0e7408692f

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