Malicious PDF — malware analysis report

Static analysis result for SHA-256 def604cf6a1d7053…

MALICIOUS

PDF

40.7 KB Created: 2020-08-19 05:02:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 21aaf4c76ff747ca533feaba552b14d5 SHA-1: 7caf986591ff56bc4eb1cd75622fd01781f011ad SHA-256: def604cf6a1d7053f63e428d1953eb962e8e8dbc4d62ee6c12d3d4755b69c448
202 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=congratulation+card+template+word'. The document body also contains this URL and references a 'congratulation card template word', suggesting a social engineering lure. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links to external PDFs, some of which are hosted on Shopify. The primary malicious URL is the most critical IOC.

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=congratulation+card+template+word In PDF document text
    • http://files.hirechase.com/uploads/1/3/0/7/130739144/nowelunalibobelixupe.pdfIn PDF document text
    • http://files.christichapman.org/uploads/1/3/1/4/131406606/92aec43.pdfIn PDF document text
    • http://files.lesleygilesart.com/uploads/1/3/2/8/132815882/nirizisazilasegovi.pdfIn PDF document text
    • http://files.kelleyintegrity.com/uploads/1/3/0/9/130970003/84a094c03d979a9.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/1/0433/0346/9206/files/problem_solving_techniques_in_artificial_intelligence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5046/6471/files/fubewepusesadumijuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5358/0439/files/tojadizowas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/el_bautismo_del_espiritu_santo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/82442438787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/34162861270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/nimupurakisirapowatus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5934/5573/files/xigafuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5317/9289/files/45937190568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/bsc_nursing_2nd_year_syllabus_bfuhs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8412/7135/files/wajizerujobanefovero.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6224 5212 bytes
SHA-256: 1be78e2a0ee5c0af606d882b2a6f5f0bbdbee386dbeb9e3ed3d1e555ece34801
font_01_sfnt_off000073ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CE 9996 bytes
SHA-256: dc8c305bba6c1a927478474cbd36f1aec36f879c1540c791d6e2d21c90f062e9

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