Malicious PDF — malware analysis report

Static analysis result for SHA-256 0816b4d1540018ed…

MALICIOUS

PDF

46.5 KB Created: 2020-08-06 16:40:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 456de2e6468479d5e33393c6b7626e1c SHA-1: cef7a49f6f7e428b9f576f9b1282f6f314950034 SHA-256: 0816b4d1540018edf8dcfabd5585ccbfd7043b05e98a2a108d4e85712a1b4d93
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure via 'ttraff.com'. Another heuristic identified a 'PDF SEO Link Farm' with numerous external PDF links, suggesting a phishing or scam attempt. The ML classifier strongly supports the malicious verdict.

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=anunnaki+vs+reptilian+pdf In PDF document text
    • http://files.nicolecosh.com/uploads/1/3/2/6/132681910/0de772.pdfIn PDF document text
    • http://files.vibeperformingarts.net/uploads/1/3/0/7/130776769/tiwamowuzapo.pdfIn PDF document text
    • http://files.kelleyskaleidoscope.com/uploads/1/3/0/8/130814636/c8467529ba7a1c5.pdfIn PDF document text
    • http://files.urbanathenscollective.org/uploads/1/3/1/3/131380841/e08c0a3f8.pdfIn PDF document text
    • http://files.mseastsclass.com/uploads/1/3/0/8/130814831/setubaruk.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/1/0431/1734/6965/files/fokupariwivemikewutulisix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/96671658868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9423/7589/files/26267862120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3531/9711/files/totudezanumodoxokide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4888/4634/files/39746031542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3438/6332/files/zefogus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2763/5096/files/38038409214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4516/5975/files/pega_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/27815866609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3013/3408/files/pejovizefegoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gijamibumiji.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_off0000782d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x782D 5148 bytes
SHA-256: 27266e0175125e378d1dfba9fce7ddac9069fff85996d3031fff0f212a9b61c7
font_01_sfnt_off000089cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89CD 10272 bytes
SHA-256: e1fdae292a92c0cefc7eda25898c504409928868ca205923441e449b85414501

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