Malicious PDF — malware analysis report

Static analysis result for SHA-256 607e650b615903c6…

MALICIOUS

PDF

84.5 KB Created: 2020-12-17 10:07:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 920ccc916aeaf4b7ffffd111d43615a1 SHA-1: 726c51e98be79250a63c72cac93241769036308a SHA-256: 607e650b615903c6a575b71c58b7f546bedabda0d0c39cef4ae213c9e134e3ce
214 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier, indicating a high likelihood of malicious intent. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO manipulation for phishing purposes.

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
  • 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.
  • 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://gettraff.ru/123?utm_term=blades+of+glory+parents+guide In PDF document text
    • https://totelulipax.weebly.com/uploads/1/3/4/4/134469391/zigak.pdfIn PDF document text
    • https://tiluzapibijodok.weebly.com/uploads/1/3/4/2/134265907/gisoxasof_puxekibirefiju_raviri.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc06ef3116eb00e3c49974f/t/5fc185eaa97599144e31392f/1606518251064/storm_media_limited_facebook.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4fd4145a8629dca78754/1606373332445/blank_slate_game_words.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/root_browser_2._2._3_apkpure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40bf289a-e1a5-4578-8d3a-c0bc20771a2b/itube_for_iphone_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/galapovudofasadefu.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/bando_fan_belt_catalogue.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce6da270e5b3713850c8d6/t/5fd7117bab1a676c72a5d548/1607930242539/performance_review_appraisal_report_examples.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf67013570fb44d1faded6/1606379266500/60561184410.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55f68711-c52c-4892-8a7a-958df3fea77b/taluk.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/blender_animation_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/osteoporosis_prevention.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb5d9429-3b3c-4d34-8dcd-2875c28ac4c9/gw2_gathering_guide.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_off00010d97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D97 5360 bytes
SHA-256: e23944d60d10b36a43fa0a61b5e995cd5913ceb2ef6d1062da0820ef11d0efed
font_01_sfnt_off00011fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FED 10940 bytes
SHA-256: 31c9dd6d4c9e7c0e0f5aa6ae3c180c9899fc87707610eb9dda34de33ba2423cb

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