Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b81e9c32eda5e1…

MALICIOUS

PDF

48.4 KB Created: 2020-08-06 05:13:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eaf87e34d3103562425b1f064c990409 SHA-1: f47a542edf59adaa324ac99d13956f5ac22f2134 SHA-256: 00b81e9c32eda5e1eac11432ac43a9220fef2b473284e09d4ff5992e620b9439
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, also contains the same malicious URL, suggesting a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

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=descriptive+quantitative+research+pdf In PDF document text
    • http://files.wflta.com/uploads/1/3/1/4/131407164/97f5cc0e07d03.pdfIn PDF document text
    • http://files.extremeflyerdesigns.com/uploads/1/3/1/3/131382239/364088ecd.pdfIn PDF document text
    • http://files.ambleon.net/uploads/1/3/0/8/130814085/1225289.pdfIn PDF document text
    • http://files.claudiariverotv.com/uploads/1/3/0/7/130775971/43d1e8ae8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3320/6690/files/kibasupatuzatisan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/74311458288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fawalonilon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zikoraj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejukimuvili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1596/8667/files/21459064504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7526/4924/files/44770835346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6984/0283/files/79668389576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2803/7287/files/2894978301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9725/0210/files/ffxiv_special_characters.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000728d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x728D 5168 bytes
SHA-256: d5fa38d005aecdaedd42806cc39bdf61feb574c0bf98282df8eb0b5301e24a6e
font_01_sfnt_off0000841f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x841F 9988 bytes
SHA-256: d5857c8fc095d6efda4ce631aab3ffd27486078b1271886b1fe6352a2ea45604
font_02_sfnt_off0000a632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA632 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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