Malicious PDF — malware analysis report

Static analysis result for SHA-256 ced91381e006f72d…

MALICIOUS

PDF

34.2 KB Created: 2020-08-25 09:46:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0488f7701d5f1327839becc460389189 SHA-1: 914ccaad7d851529615d34f39b3126d89c25bcc9 SHA-256: ced91381e006f72d40a5185055c47dbf127cfbbd580c9acfc8a78894c673bc6f
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a worksheet and includes the malicious URL. The primary attack vector appears to be tricking the user into clicking the malicious link, which leads to the ttraff.cc 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=adverbial+prepositional+phrase+worksheet In PDF document text
    • http://files.avotova.net/uploads/1/3/1/3/131383825/xiripesep.pdfIn PDF document text
    • http://files.blacksprucestudio.com/uploads/1/3/2/6/132695306/vidikir-wezonep.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/1/0432/0893/3540/files/boss_telugu_movie_hd_video_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/gewipaluxaleregezebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5584/8355/files/allow_discord_to_use_mic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3281/3473/files/duracell_auto_battery_fitment_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70277109097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6542/5570/files/74381694480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48880371243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/suwuvilegovuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7519/0430/files/80798724313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6869/3407/files/understanding_computers_today_and_tomorrow_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/1756/8157/files/missouri_river_fishing_report_below_hauser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6644/8279/files/flight_simulator_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4441/3341/files/xasunebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6500/7509/files/71067017865.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_off00004878.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4878 5392 bytes
SHA-256: e970fd2e1815e14cc5775d1778b0df2bf922d1618cad754ae00b3e37268d37e7
font_01_sfnt_off00005ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD0 9556 bytes
SHA-256: 18d75ff2d58e272ba3471f2a2dc3d2f5c0f4cb75783f7ce3666ea7a5abafe332

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