Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ed668a92796ffa4…

MALICIOUS

PDF

50.0 KB Created: 2020-08-20 19:09:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e486dcebedfde3c49b8a41133d7d86f1 SHA-1: 421cc5ded4441bfc9ffe4bc64acb85bd2057e344 SHA-256: 9ed668a92796ffa4bb428e9cb4b215e24c122e159674baa8260a8dfac247f648
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm. One of these links directs to a known malicious redirector, ttraff.cc, which likely serves as a gateway to further malicious content. The ML classifier strongly indicated maliciousness, supporting the presence of these links as a primary attack vector.

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/pify?keyword=alphabet+phon%25C3%25A9tique+international+anglais+pdf In PDF document text
    • http://files.artandroulla.com/uploads/1/3/2/6/132681657/wobaxazup_vuzetimi.pdfIn PDF document text
    • http://jilaremid.marinelifeproductions.com/uploads/1/3/0/7/130775432/wuxesipuv-wakafolepawab-xarapoxevaxiwo-kabuguxaxatu.pdfIn PDF document text
    • http://files.bulletproofcannonball.com/uploads/1/3/1/8/131856398/dutagijujadif_lavuxemivorepug_nibasabepuwuxal_befugavunevop.pdfIn PDF document text
    • http://files.backlotcoffee.com/uploads/1/3/1/4/131407135/fedfb73.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/1/0429/5557/1353/files/38751576675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/93047255535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefopevepal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/2935/1835/files/42861809095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/rise_and_fall_civilizations_at_war.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8439/8246/files/56733898969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/normal_and_abnormal_gait.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4591/0678/files/84078252104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5847/0822/files/aol_mail_for_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/concierto_de_aranjuez_guitar_solo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3233/6792/files/92582179239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/92465962158.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_off000072cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CF 5700 bytes
SHA-256: 70cee21f64bb51b19df7fc0d5ab1436ea485d87c93a996304890d168608d3c0e
font_01_sfnt_off000085cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85CB 17060 bytes
SHA-256: 2a5cc51841a93c8f0604adb8ce33711364a2b1f2f37b64fbd87c522666dd2cbb

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