Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3c77741d4df706c…

MALICIOUS

PDF

43.1 KB Created: 2020-08-03 18:22:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db64510a472e5b9f86edd09b48a952a8 SHA-1: 72d44ef5a7ea64f6cf2039e9f13fe67ac9d6bbba SHA-256: d3c77741d4df706c7cf90977077717cccdcb8742e46befc66984ca8dff775b89
202 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the same malicious redirector URL and several benign-looking PDF links, suggesting a lure to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=systematic+review+example+pdf In PDF document text
    • http://files.tournoidevignoles.com/uploads/1/3/1/8/131856290/mabutimeparos-konakemit.pdfIn PDF document text
    • http://files.theworldaccordingtojake.com/uploads/1/3/1/8/131871433/menadob.pdfIn PDF document text
    • http://files.crazycurrchic.com/uploads/1/3/2/6/132695832/3ccfaeab5d.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/1/0436/9724/2280/files/67516684463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2308/9307/files/wuwaxefov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7757/4551/files/57422492230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4590/2746/files/kewitudinosesosexukerik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5787/2038/files/41383004020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1760/0152/files/91185727892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3695/8106/files/95009648775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15906675896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/8430163173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/lokexatavul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8679/0304/files/18007032001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5412/0606/files/37458794091.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_off000069ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69AE 5724 bytes
SHA-256: f53d671f327702da4df531f8fb46968624a13ce2917441cb11acb26e0cebbdfb
font_01_sfnt_off00007d31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D31 10028 bytes
SHA-256: d6b65b46c32bf00db87164e943a4282e1dad1d3bce4df6b08d2e56dc0ee5aa5b

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