Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d2f98bfebb186c…

MALICIOUS

PDF

67.2 KB Created: 2020-08-23 07:40:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26b285b81562ea1865145354797fcff7 SHA-1: f09e05be43880cf5f634b71dc0735cdd2dd26bdf SHA-256: c3d2f98bfebb186c850f06be9ace6c0390540829c1c8dbfd83d963849dcfeddc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF was flagged as malicious due to a high ML score and the presence of a link to a known malicious redirector. The document also contains a large number of embedded links, many pointing to external PDFs hosted on various domains, suggesting a link farm or SEO manipulation tactic. One of the embedded URLs, 'https://ttraff.cc/pify?keyword=baccalaur%25C3%25A9at+en+informatique+uottawa', is identified as a malicious redirector.

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=baccalaur%25C3%25A9at+en+informatique+uottawa In PDF document text
    • http://files.experienceearth.store/uploads/1/3/2/3/132303019/2209223.pdfIn PDF document text
    • http://sagotas.montejournal.com/uploads/1/3/1/8/131856907/b006dd40081.pdfIn PDF document text
    • http://files.butwheretostart.org/uploads/1/3/1/1/131163635/fewisikabegisil_xiwapuzidu_gawozatime_bawit.pdfIn PDF document text
    • http://files.glencoeflorist.co.uk/uploads/1/3/1/8/131856276/nigijulozivedup.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/1/0435/0899/0116/files/ielts_vocabulary_english_to_bangla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/4442/9984/files/synthse_de_l_acide_sulfurique.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/ruzibebibowuzofaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1600/9374/files/absolute_power_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30072581460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4795/2294/files/xanifuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8977/9106/files/77396054693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/agile_scrum_master_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/6213/3663/files/jackpot_thefatrat_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0654/7352/files/steel_design_segui_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1154/7037/files/72981741577.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_off0000c694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC694 5256 bytes
SHA-256: 52e4a0fc887596e443905c71bd34a15e959744b23a154f74a0fcf159f515e581
font_01_sfnt_off0000d82e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD82E 11968 bytes
SHA-256: 324673c4824ddd6f79f8301c38046f7bcbe37cae7cc7a5c7f8a951c66627765d

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