Malicious PDF — malware analysis report

Static analysis result for SHA-256 c731d3a989330139…

MALICIOUS

PDF

36.7 KB Created: 2020-08-16 22:43:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74969c8e24dd7d386b33cd0a0eb00eb0 SHA-1: ec34bcfa99316a5fed380e84986d922ca85c73c3 SHA-256: c731d3a989330139f239dd046394d565c27fc017fe123c1b2e5fff649289abef
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.com, which is a known malicious infrastructure. Additionally, it hosts a large number of external PDF links, many of which point to Shopify domains, suggesting a link farm for SEO poisoning or to obscure the final destination. The document body contains a call-to-action phrase, reinforcing the lure to click the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=chuy%25E1%25BB%2583n+%25C4%2591%25E1%25BB%2595i+t%25E1%25BB%25AB+file+pdf+sang+%25E1%25BA%25A3nh In PDF document text
    • http://files.dovber.org/uploads/1/3/0/7/130739614/fumoxiriverofoj_gefis.pdfIn PDF document text
    • http://lelozuxol.communitybetterment.org/uploads/1/3/1/6/131606183/1655305.pdfIn PDF document text
    • http://files.fuali-barbados.com/uploads/1/3/2/7/132712508/1f42e71c1.pdfIn PDF document text
    • http://files.richardberretttours.com/uploads/1/3/2/7/132740285/7688359.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/1/0428/8125/3535/files/pidovogisepalogame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4885/2891/files/doruvobufiziratizej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96626323422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2311/3119/files/xufikusos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1779/files/51318733915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5557/1353/files/62327644440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2754/5763/files/gijivunalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/7016/5916/files/adm_logo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1729/8329/files/yasin_dan_tahlil_latin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8223/4521/files/56373472613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5544/7202/files/13491467119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2363/4330/files/como_hacer_un_cargador_de_bateria_automotriz.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 2

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_off00004f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F3C 6200 bytes
SHA-256: ad87a36bffee7ccce809a9f4a21ab22de0e34c9c1ea3e485e376be31494309d3
font_01_sfnt_off000062e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E5 9540 bytes
SHA-256: f17431bf8d06ffb1152122d0620ac3cbc21e1fbb939b514dc2955c9035bba1b8

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