Malicious PDF — malware analysis report

Static analysis result for SHA-256 af66016a6a3af59d…

MALICIOUS

PDF

34.4 KB Created: 2020-08-19 03:33:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a1fa9afda33055ad37345b9d3b8f1a3 SHA-1: c011f929986923f8ac57eee6d2e07a40cc76e705 SHA-256: af66016a6a3af59dfe72c1004f2a612c18fff98558e41749894341b97fcdc8c9
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 'https://ttraff.com/pify?keyword=kinetic+theory+properties+of+fluids+answers'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning tactic. No scripts were extracted from this sample.

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=kinetic+theory+properties+of+fluids+answers In PDF document text
    • http://wafirevot.fiveboroughbucketlist.com/uploads/1/3/2/8/132814742/1376973.pdfIn PDF document text
    • http://busorupik.jayandersonbass.com/uploads/1/3/1/4/131452883/805174.pdfIn PDF document text
    • http://files.nttechnology.net/uploads/1/3/0/9/130969904/juguxaxujaxite-vubozunim.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/1/0432/5982/2244/files/22521426512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7591/0294/files/calculus_anton_bivens_davis_11th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/didevebipuzumasutaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6127/9896/files/wupagugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7309/2246/files/takozagetiziwax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0019/0360/files/fidugajig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7836/0987/files/antonin_artaud_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fatexuxutul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/68432073669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3997/1738/files/27227509303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7338/6136/files/28904198204.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 4

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_off000049e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49E2 5404 bytes
SHA-256: 750067477da0136b76692252207338a8d4013c550f9f7005b6a7626bf1461739
font_01_sfnt_off00005c4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4D 9556 bytes
SHA-256: c2a61d3bb710e5ea137c39d89f5683c22bbc81e6bbfcdb5cc7c712bf07651586

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