Malicious PDF — malware analysis report

Static analysis result for SHA-256 af5a7d340fde0fc0…

MALICIOUS

PDF

35.3 KB Created: 2020-08-14 21:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 568793a0853bbec6ec55acd83cc4a698 SHA-1: 7f430a2a4b74091ce0077530f6359e6427c387ec SHA-256: af5a7d340fde0fc018fc19630cbe91e8bc760b6968cee14453217b762f45bbc8
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.cc'. The document body, though heavily obfuscated, contains references to the same URL and a large number of other PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary intent appears to be redirecting users to malicious infrastructure under the guise of providing a document.

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.cc/wb?keyword=nfpa%2072%202016%20record%20of%20completion%20pdf In PDF document text
    • http://files.kquattrin.com/uploads/1/3/2/7/132712163/578642.pdfIn PDF document text
    • http://sopaka.honest-elections.com/uploads/1/3/1/6/131636725/2719504.pdfIn PDF document text
    • http://files.greenrivermwc.com/uploads/1/3/1/6/131607407/jovotuzasivof.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/1/0430/8254/7361/files/17903953956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/kevilefamubos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/39803333354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1137/5267/files/zazajebavotudupuwabim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0547/4978/files/67112070402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7985/0398/files/company_letterhead.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/18969340997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/desmosomes_and_hemidesmosomes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/libros_sobre_alimentacion_saludable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5428/5479/files/zutujipuraxir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5841/2185/files/php_generate_from_html.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_off00004c85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C85 5652 bytes
SHA-256: 8e3645d97037a00302cd22d89d26fbc0272c8dba6b4af5f3ef91621f4aadb8da
font_01_sfnt_off00005fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAD 9688 bytes
SHA-256: bf50646e04c650f62287ab09b60f398167df13d6fa4d9a84699edc1cdfc77518

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