Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c8cdd4547cd5c9d…

MALICIOUS

PDF

49.9 KB Created: 2020-08-26 14:56:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4bfa4f8e63ce5caa9d3f5d0dd8ce048 SHA-1: f31490b49762a30ebbe6fe9781c65d828bc2f9a4 SHA-256: 3c8cdd4547cd5c9d17cbfad339729e16db8a443d1d0375ec41df5b3d1a3b4859
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=war+thunder+american+planes, which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious content. The presence of a large link farm and a malicious redirector strongly indicates a phishing or malware distribution attempt.

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=war+thunder+american+planes In PDF document text
    • http://files.romainewashington.com/uploads/1/3/1/8/131857193/ropodefi.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/1/0434/4047/2229/files/75830687091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8969/4630/files/characteristics_of_athenian_democracy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/back_propagation_neural_network_algorithm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7466/7164/files/52498766785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/gufabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/dofelunuxiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9244/3303/files/kabewejifefipowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7012/8277/files/joxevaripuxekavive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9027/1638/files/28629818751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/beats_solo_3_user_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2807/9004/files/new_trends_in_audiovisual_translation.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCB 5096 bytes
SHA-256: 0954aaa8119585d991fe32d3058c3e726759a6a8f88df9114218ce66aec56fea
font_01_sfnt_off00007ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CED 15116 bytes
SHA-256: e34d18269fbbe02fc23ed9006f797d5e8922d3a1a4af0bb22c482d5fe1f14312
font_02_sfnt_off0000ab26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB26 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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