Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5199b4c8e76b19f…

MALICIOUS

PDF

37.8 KB Created: 2020-08-16 14:47:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 14f40d5a6bf50cfab70766f55663e9a3 SHA-1: cfadf9d2375042925088beca583f779ef8cf5790 SHA-256: d5199b4c8e76b19f4fc143a0192b50bc13083c30e622f0a1a8f490e8e043d606
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or redirection strategy. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be social engineering via a deceptive link.

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.com/pify?keyword=video+gif+converter In PDF document text
    • http://jerit.brentcue.com/uploads/1/3/1/3/131398575/pigezi.pdfIn PDF document text
    • http://files.fitzwrestlingacademy.com/uploads/1/3/2/8/132814136/af34df.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/1/0429/5042/6787/files/anteproyecto_de_tesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5410/files/3866764033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8746/9469/files/accp_chest_guidelines_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/widosutukiwafukovaruluf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2093/5590/files/25951837669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4663/files/runepejepuwuraleb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4925/4041/files/jewelowojumuwogikomupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/senorita_audio_song_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5666/8573/files/98377087257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7290/3585/files/skid_steer_backhoe_attachment.pdfIn PDF document text
    • https://ezgif.com/video-to-gif?url=https://example.com/video.mp4In 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 2

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_off0000570b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x570B 4796 bytes
SHA-256: 80e00b363835c78273fd1170d3b352a7962b802f29695ff8f62b5b4883e3acb3
font_01_sfnt_off00006777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6777 10352 bytes
SHA-256: 4f5d2110b14694bd0b4b9168ce1b48437d3650a921c478b76f9e624a574a4b21

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