Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3bd664a3646122b…

MALICIOUS

PDF

42.2 KB Created: 2020-08-12 02:00:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa27853f145590fd0785b8b02c1b31b9 SHA-1: f4c726c447e262319dc420ca78a59b5ab1b03d91 SHA-256: c3bd664a3646122b9a4e243a903bca4264878e6f9240de9db6dd089b59f1d2a7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link and a large number of external PDF links, indicating a link farm or redirection tactic. The ML classifier also flagged this PDF with high confidence. The primary malicious URL identified is https://ttraff.cc/pify?keyword=dlf+camellias+brochure+pdf, which is likely used to redirect users to further malicious content. The document body is heavily obfuscated and appears to be generated content rather than user-readable text.

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=dlf+camellias+brochure+pdf In PDF document text
    • http://files.polyq.org/uploads/1/3/1/4/131406885/9110095.pdfIn PDF document text
    • http://files.leinsterbistro.com/uploads/1/3/0/9/130969548/f57e16b0b79.pdfIn PDF document text
    • http://files.sweetblackberry.org/uploads/1/3/0/7/130738696/f187805e9dcb.pdfIn PDF document text
    • http://genavuw.kitchengadgetvegan.com/uploads/1/3/1/0/131070109/labek.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/1/0431/5663/5804/files/mumbai_ahmedabad_bullet_train_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9360/9896/files/sodetikugozupab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9626/7168/files/53882637885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/nesefinatonaferigakugofar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3164/2780/files/78798995193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3796/5986/files/49194587957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/fedupek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3385/4103/files/sejiwopizabasopavibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7828/7513/files/luvevetadilubinojaxalumad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3133/0969/files/45899422664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3208/3612/files/naui_scuba_diver_book.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 3

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_off000067bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67BF 5532 bytes
SHA-256: 4b382c405edba291792ff4653f3583eba7a342ad7230d050a33f95e1f6447cf0
font_01_sfnt_off00007a65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A65 9844 bytes
SHA-256: 6837a5351b7fd171fa925a50fd8336a64bdb4c1516214aefa5b3890ac4a65998

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