Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cf0290dd208592d…

MALICIOUS

PDF

41.1 KB Created: 2020-08-07 04:21:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0d897cb384939a0053ce5afc00b98766 SHA-1: df3b3f0d83403482a21e4b005968013c9edf42d0 SHA-256: 8cf0290dd208592d6ad6f5a859c5bcb9b1b3e028fce1e2ac70cceffe25e917f5
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector (ttraff.cc), suggesting a phishing or malware delivery attempt. The document body, though partially corrupted, contains text related to 'exercices cm2 pdf' and the authoring application 'wkhtmltopdf', indicating a lure to disguise the malicious intent. The presence of a link farm and a malicious redirector strongly suggests an attack pattern focused on driving traffic to harmful sites.

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=les+adjectifs+num%25C3%25A9raux+cardinaux+exercices+cm2+pdf In PDF document text
    • http://gixikaveb.kristinecali.com/uploads/1/3/1/4/131408738/savazaka-bakufegeworatu.pdfIn PDF document text
    • http://files.tmi-photo.com/uploads/1/3/1/4/131437977/mawopixanubes.pdfIn PDF document text
    • http://files.stjosephcabotpbm.com/uploads/1/3/1/4/131452944/4968378.pdfIn PDF document text
    • http://files.dmahc.com/uploads/1/3/2/7/132740638/mexurazidasazipigal.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/1/0433/9813/5966/files/31906656151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5702/7992/files/blue_orb_pixelmon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2105/7700/files/bemibusebupogajufag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/jotabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1612/5590/files/26014918494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5955/9065/files/jupetobibovazukotuvisun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gevuruliwineda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/2723/9836/files/two_coins_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1628/9447/files/7954863850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/munuzajutajamarigeregutoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/adjektivdeklination_mit_nullartikel_bungen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9675/0742/files/tuvesowijuwawu.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 3

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_off00006016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6016 5628 bytes
SHA-256: eadf89de2b1258f6cef9592a90dbe1912faf3e0dbc501d322b601833b0ac43f9
font_01_sfnt_off000072f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F7 10624 bytes
SHA-256: 7f0c06d921aa1c744a0b03615704ecff492e15848532ce390828ba01219cde68

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