Malicious PDF — malware analysis report

Static analysis result for SHA-256 067c94313b02cbe0…

MALICIOUS

PDF

40.1 KB Created: 2020-08-19 14:29:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 632de59317b4b6995a201fb25521780c SHA-1: 8ec55cfcac94c197b14337b50d98648fbbf50214 SHA-256: 067c94313b02cbe0b35a7c92f329b65831c1e4bf42f769ccbb1de4068b2dac75
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com, which is flagged as a redirector for SEO-based phishing. The document body, though heavily obfuscated, contains text related to 'attendance certificate format for school students' and the malicious URL, suggesting a lure to trick users into clicking the links. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=attendance+certificate+format+for+school+students In PDF document text
    • http://files.expandedcinematography.com/uploads/1/3/2/8/132814073/dibozinefo.pdfIn PDF document text
    • http://jomafivek.cwwdelta.com/uploads/1/3/2/3/132303117/1959161.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/1/0431/8648/7455/files/61829042317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1737/9745/files/sipebevutonasepisabadezij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/moxenulajeziwuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2641/4749/files/free_3d_action_games_for_laptop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4149/6986/files/fomenevekelolijam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4950/0328/files/91442703364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5361/2182/files/bitoxid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6660/3158/files/nujadipitezuwosaludivisij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/12871828548.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_off00006003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6003 5248 bytes
SHA-256: 70db834385fe983150f684535d7b2e2c0fc4dc19f3214bf5c982a7f50ea8335e
font_01_sfnt_off000071ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71AE 10052 bytes
SHA-256: 65e93be55ad125fcb5146de99d1f28b2f532d4710aa7b0226dde46bb7606dc1f

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