Malicious PDF — malware analysis report

Static analysis result for SHA-256 817af8a20d1762e2…

MALICIOUS

PDF

40.6 KB Created: 2020-08-05 08:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 905c6e94f263b74125b85d19e49b6c29 SHA-1: 390cf270bf57a01f749ecf0bc990577ae29130be SHA-256: 817af8a20d1762e2a1e8f44b0f134f90258655f898e6f9a90a81205f8a33d8f5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to SEO-optimized URLs that redirect to a malicious domain (ttraff.com). This suggests a tactic to distribute malware or conduct phishing by luring users through seemingly legitimate but ultimately harmful links. 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=cystite+chronique+pdf In PDF document text
    • http://files.jennifercaraluzzi.com/uploads/1/3/2/7/132712225/ledumesaronabom_nobanevunuvadul_rekixob.pdfIn PDF document text
    • http://files.aando.com/uploads/1/3/1/1/131163684/04ffdc9b8ab067.pdfIn PDF document text
    • http://files.westonathletics.net/uploads/1/3/0/9/130969204/vovelokefozidedura.pdfIn PDF document text
    • http://files.jerseycarpets.com/uploads/1/3/0/8/130814216/2983082.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/1/0439/5725/6350/files/voximolugewunewanasixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wososopozabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/wotokodepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53446206952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/46034159169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/50816770213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/28507919169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/adventure_game_studio_tutorial_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/sexelenufejag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0884/2152/files/96518766573.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_off00005e97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E97 5136 bytes
SHA-256: 0d8483959433645f7f3dc242f65c0d328333b05c056d747b21a1d9d2e06341f7
font_01_sfnt_off00007013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7013 12188 bytes
SHA-256: bd0118a03a515d1ed9e6db975c14695e90444f4c45fd93b015caa2049ae5b19d

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