Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d1c70fbbd080a3…

MALICIOUS

PDF

42.5 KB Created: 2020-08-23 21:00:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 699ec98cda63ab1c09cd788c5db4e84a SHA-1: a91b5b443685ec25be7f26db313e148ca5685f9f SHA-256: c3d1c70fbbd080a37c4f8b214af7f3bf3eff23996973e958908a1e324db45dc6
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 specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=bitwise+asset+management+sec+report' which is flagged as a malicious redirector. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic, potentially to obscure the malicious redirector or distribute further malicious content.

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=bitwise+asset+management+sec+report In PDF document text
    • http://komul.lightbox.at/uploads/1/3/1/8/131856703/suvuwuxebo.pdfIn PDF document text
    • http://files.falconathleticsnj.com/uploads/1/3/1/3/131398259/diketimujosuv-gavegovi-nobosusawa-tegeso.pdfIn PDF document text
    • http://files.sapritalia.com/uploads/1/3/0/7/130738988/6315467.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/1/0431/7950/7870/files/amharic_english_parallel_bible.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8170/2303/files/xunixapabigupesanuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/zalabik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8520/9512/files/79722013583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/baidarka_plans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/xagadadebolutoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2814/2485/files/vosobavijifebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9440/8354/files/kodiak_island_bear_guides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8697/1029/files/60904383678.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 5

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_off000066e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E8 5364 bytes
SHA-256: 82eae8062d7f75d498ef453e96eebf231e4a764532ecd27349bd4793b9f2f55b
font_01_sfnt_off0000791c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x791C 10652 bytes
SHA-256: 7c9b83d79ccde89381b04da8cd5e62444962684ec6a5d03bcdfe22024559439e

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