Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c4197021bd4fbe3…

MALICIOUS

PDF

68.4 KB Created: 2020-11-24 06:41:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 33b5d2a042062e3e9e1bf62ef8bb7cdf SHA-1: df19ee8abfed6f742bb6e35197d43fcb70d32f36 SHA-256: 5c4197021bd4fbe334a79b8ab4aa188428642c510f6b45b50012ae3dc9352217
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links pointing to a known malicious redirector, 'traffine.ru', which is indicative of a phishing or scam attempt. The document body, though heavily obfuscated, suggests a lure related to unit conversion. The presence of numerous external PDF links, many pointing to benign resources but some to unknown ones, further supports the idea of a link farm or redirection scheme designed to obscure the final malicious destination.

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
  • 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://traffine.ru/strik?utm_term=convert+dbm+to+milliwatts In PDF document text
    • https://sizasaligibi.weebly.com/uploads/1/3/4/5/134506534/xufev.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/9197360965.pdfIn PDF document text
    • https://xemakoxen.weebly.com/uploads/1/3/4/3/134320116/zafolulo-zoteg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4536343d-e8e1-4b0c-bfbb-e3bf02ac42ef/morimajomorop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a18ba6d1-6ca5-42ff-bf4c-82342483f35f/how_to_get_games_on_ti_84_plus_c.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce410fcf-b4f1-4e6d-90a2-0839941ad52c/sizuniduwutos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98c911ad-d316-4264-92af-83d3d397407c/7843603147.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fecaca7-1046-446a-995c-4526bf283698/wudorefeveg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3bbc5b2-b0c1-48bc-b888-0ab3ed3862d0/metodiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0070951a-43f9-4917-8449-f0d93da2ac7f/burgle_bros_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6c65edf-1433-4cfc-8dbc-7ec70aeb932f/practice_12_2_chords_and_arcs_answers.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB902 5168 bytes
SHA-256: 2e251a9f3dfa845fbb40e8fe89cb3dece436d82c6fc1a2c0623d8522b5bc260f
font_01_sfnt_off0000ca87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA87 11728 bytes
SHA-256: 077176b901f866addf453f9fa67e2bccee63d903efa2de18f6a79f00d50f412b
font_02_sfnt_off0000f030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF030 16060 bytes
SHA-256: b10e7a0583bf6b216a5471aeed10f14210f1dda3adb60ac5169fcb38ba12e60c

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