Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f351567590719ae…

MALICIOUS

PDF

33.4 KB Created: 2020-08-28 16:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: deccf171c7ade53b5a47c29f188d0ff5 SHA-1: b0d02fb8798424f9d8ba3a747673b3b043c95486 SHA-256: 9f351567590719ae987e61c53270154bd8899cebf82d047669d98bacd67a68dd
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to what appears to be a link farm designed to mimic educational content. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.me/pify?keyword=the+language+of+literature+grade+9+answers', suggesting a lure to a malicious site under the guise of providing answers to educational material.

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.me/pify?keyword=the+language+of+literature+grade+9+answers In PDF document text
    • http://files.customeradvisorygroup.com/uploads/1/3/1/0/131070918/lagazudufep.pdfIn PDF document text
    • http://files.howardcountyschoolhealthcouncil.org/uploads/1/3/0/7/130775760/e72c83ccd0c.pdfIn PDF document text
    • http://nobamu.mymindfulconnections.com/uploads/1/3/1/0/131070420/minifapekuxanu.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/1/0439/8625/6030/files/exploring_public_relations_global_strategic_communication.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0537/7688/files/lizinadego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1995/9463/files/kabaddi_official_score_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7536/2198/files/60737238719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3797/2897/files/75870243897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/6408/2851/files/two_weeks_notice_full_movie_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/7710/8647/files/lutevutexas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4890/2554/files/definition_cerebral_palsy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7482/2043/files/73812876382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2560/2472/files/xazavujetovud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5201/4495/files/lupepeduvusowixotenanej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8767/6063/files/73796136997.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 5

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_off00004593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4593 5368 bytes
SHA-256: 5f779bd1e43512a83376a2bfb6b8872c761e285992f65ec7495fa2f252b329a8
font_01_sfnt_off000057d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57D8 9676 bytes
SHA-256: fdfa5d357ada0f2ee3ec95457b3cf831b98e2bdfbf027dc0033be3ada68cd66d

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