Malicious PDF — malware analysis report

Static analysis result for SHA-256 3715cea91b4420da…

MALICIOUS

PDF

68.7 KB Created: 2020-12-18 03:43:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 6de3ff289bc4c90b855778b1911ea9c4 SHA-1: 8cd0630e1741af15eb43ba66354ab5eaa5424d14 SHA-256: 3715cea91b4420da113aeecc66c8ee5f76622b45070d747ea7ab56f4b86ff2b2
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous external links, with a prominent one pointing to 'https://trafftec.ru/aws?utm_term=night+blindness+disease+information', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to contain keywords related to disease information, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/aws?utm_term=night+blindness+disease+information PDF link annotation
    • https://xiriwedonup.weebly.com/uploads/1/3/4/2/134265341/013b84d38.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/57527704935.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/leleketutur.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc364a740f1034a5cb8cf86/t/5fc3f131a97599144e71f1f0/1606676786229/98543545834.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/palipufinupadona.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/55570488622.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65274c65-1230-41b3-a2f0-8af99d5afc2e/dead_poets_society_book.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/uttrakhand_govt_jobs_2018_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/icomania_icon_quiz_answers_level_11.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/rusulilanutenawogase.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/chirugali_veechene_song_naa_songs.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD241 5432 bytes
SHA-256: 62eb7169c7f156cd030d7e76165543ed121b0c618dfd90ea81baf9b6ca858aea
font_01_sfnt_off0000e493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE493 9800 bytes
SHA-256: f5f90e7d045bd111b0bf82685ec3efc30f0e6dc02ba39d9d85f9dd0ee7306dae

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