Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5347eb8f97a2027…

MALICIOUS

PDF

57.6 KB Created: 2020-08-15 16:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1dd65f993d9bc7c449189ccee7ee5a2 SHA-1: ce2e9062d29269ce225eae89974c9b64984b99c5 SHA-256: b5347eb8f97a2027b0fb95a757256336748e7b78167955f590a46f28b5d866ff
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to domains that appear to be part of a link farm designed to host malicious content. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used in conjunction with the lure text "Prosody examples pdf". The document body, though heavily obfuscated, contains the same lure text and the malicious redirector URL, confirming its intent to trick users into visiting malicious sites.

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/wb?keyword=prosody%20examples%20pdf In PDF document text
    • http://pakured.marygoldsteinpt.com/uploads/1/3/0/8/130813612/6438007.pdfIn PDF document text
    • http://dewexiwim.happysnapsstudio.com/uploads/1/3/1/1/131163763/6fdfd1b460e6d8.pdfIn PDF document text
    • http://files.celebrating40.com/uploads/1/3/1/3/131379868/woxidurugonekekevuk.pdfIn PDF document text
    • http://files.moniquevek.com/uploads/1/3/0/8/130874469/jiwuzejimik.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/1/0428/9835/8432/files/loxidunadubufurepetiverox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6281/9990/files/22223931225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8991/1194/files/infinity_alt_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35543542817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8921/3093/files/38757736990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9906/8310/files/lupakenipedomuwip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2808/5912/files/61397249913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6375/4408/files/jasexudumukobutikugevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1984/5278/files/embodiment_of_scarlet_devil_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6074/6648/files/nursing_code_of_conduct.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6863/7862/files/example_of_application_letter_for_immersion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/0254/7611/files/fun_speaking_activities_for_adults.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_off0000a28e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA28E 5360 bytes
SHA-256: 5f67c451c90d45c3275853a32d1cd14a0df76f55d078d8cbf9b74f3b0f7e288b
font_01_sfnt_off0000b4bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4BD 10656 bytes
SHA-256: e6d82e02181ab7598dee870d8fe9b8be8d18aefc694f446eebd2f7f646b5e99e

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