Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2cfd845d432e297…

MALICIOUS

PDF

55.3 KB Created: 2020-08-11 01:56:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d739a0d6d699b1fe8da8ea721284c1c3 SHA-1: a52d07a1076002df6b40f9367bb8c62d05ad929e SHA-256: b2cfd845d432e297e8208a62b5b866c6417dcbc2cf31d17f8805d7555eb59d90
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary goal is to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

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=nombre+rationnel+et+irrationnel+exercice+pdf In PDF document text
    • http://files.ignaciocarballo.com/uploads/1/3/1/1/131164112/1998454.pdfIn PDF document text
    • http://files.tcoectc.org/uploads/1/3/1/4/131453902/a5197.pdfIn PDF document text
    • http://kagoxe.galsforcal.com/uploads/1/3/0/8/130814328/6f11bd.pdfIn PDF document text
    • http://files.castoncareerdevelopment.com/uploads/1/3/1/6/131606392/rosikori.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/1/0431/5503/0170/files/overtime_request_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5808/6559/files/20134812252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6284/5859/files/kuvevepepolagenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7596/0985/files/27605967978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7329/0908/files/54002156104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6404/2396/files/kogezesafejinikufap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/monazata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2214/0063/files/53617968681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5398/1594/files/tobawibaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9072/9377/files/como_sacar_tu_certificado_de_secundaria_en.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4247/1064/files/marlin_model_60_manual.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 6

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_off000095dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95DC 5300 bytes
SHA-256: eef22b8335b1fea48aae7dc4e3af31e9727ce1026b4f7462b5fc9c37f03de5cf
font_01_sfnt_off0000a7cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7CC 13204 bytes
SHA-256: 8a9a5244558e31ce0887870e537c1c87f4308b1f853616fccad267ecd21f414d

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