Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd47d45dea31b308…

MALICIOUS

PDF

68.6 KB Created: 2020-11-17 10:30:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 3f1ef042d98272b715512784013c1f62 SHA-1: bc1433aae321a052374e513cbf44f35e5a416b85 SHA-256: fd47d45dea31b308401b325ce8df1dcd781f162edf8e6620cad49594da075788
156 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 as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://trafficel.ru/strik?utm_term=real+steel+torrentking PDF link annotation
    • https://xoselupovogim.weebly.com/uploads/1/3/4/6/134610719/neletipan-duxuzo.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/mubemutolewe/gatuvewudo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efc70e0a-36eb-4176-babe-3de0b966b1ec/explain_the_24_elders_in_revelation_44.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/cell_cycle_regulation_pogil_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5c765a4-b230-412a-a438-299e8e5cca2e/47870142284.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe879f8e-b450-465c-b2b6-5ef6d4c53011/98238869503.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/sheet_metal_gauge_chart_fractions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3911bc64-8824-46dd-a5a3-d1ea6c2c48c9/ionic_compounds_containing_transition_metals_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/307e5773-8b58-445c-858c-0d86b7518bab/molukogexabur.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/the_irishman_parent_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acc96295-1ba8-4571-bb08-b48c65de1d1a/unblocked_pokemon_ruby_game_online.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/60979874883.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53f878ab-8f82-4839-bcdd-2e0b78d031b2/gibudexubezavebimefiwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/850de830-75b6-4fd0-aa2a-52de5c5f59fd/ludubuzatipa.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/bohemian_rhapsody_piano_notes.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_off0000cfdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFDC 4924 bytes
SHA-256: 77ad5a87ecc1a3b31e0020f9e8da0cf67f15accabdd7826eae33322f3be184ab
font_01_sfnt_off0000e0b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B3 10916 bytes
SHA-256: d64410c2187e2ed4a66cdc5e37d0422c6c841618082433347d7ef60871871177

Open this report in the interactive analyzer, or submit your own file for analysis.