Malicious PDF — malware analysis report

Static analysis result for SHA-256 0140f9f249b14ae9…

MALICIOUS

PDF

69.0 KB Created: 2020-12-16 19:35:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9d01766bf372bf65cf5f9238263a5e4d SHA-1: 14b03ace3bdc7afc561aa38655946534f627b682 SHA-256: 0140f9f249b14ae9748d54867bf7bfef4fa6940b31c3eee966c8a1d47d63362d
214 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF SEO link farm. One of the embedded URLs points to known malicious redirector infrastructure. The ML classifier and ClamAV also flagged this PDF as malicious, suggesting a phishing or trojan distribution intent.

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/strik?utm_term=cual+vs+que+practice In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_5f93c05920297.pdfIn PDF document text
    • https://rozazokosu.weebly.com/uploads/1/3/0/8/130813972/8617757.pdfIn PDF document text
    • https://gapixupat.weebly.com/uploads/1/3/1/6/131637313/9800442.pdfIn PDF document text
    • https://gawugabel.weebly.com/uploads/1/3/4/3/134361726/sonuti.pdfIn PDF document text
    • https://tijujuvuxerupuz.weebly.com/uploads/1/3/4/2/134236121/109416.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377410/normal_5fccaf758514c.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/6f0dcb7d-13c6-41a4-a28f-6f4c8e6c4eed/82212611440.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28fbed26ff1194f7e5808/t/5fd0645d12264b5dfdcb466a/1607492704615/best_friend_ringtone_for_iphone_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf52a1cb3e0f5771462b89/1606374058748/the_catholic_faith_handbook_for_youth_third_edition_chapter_1.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d2f2d26ff1194f734ddd/t/5fc1b0629d79364840cd386b/1606529122550/how_to_make_yellow_paint_brighter.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1321e2e34347c7045f8f9/t/5fd1d7a91693665fc7d2f2ce/1607587756025/petroleum_engineering_jobs_denver_colorado.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d8d416f6d44b07d7d45f/t/5fd684c43ebe0416316524f0/1607894213643/critical_ops_apk_ios.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a0febd14ff0dd2bcca88/t/5fc69d904f98375720c7d185/1606851984840/99146828558.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7aeac02915d4a16fa01ec/t/5fcd62f805ddc9599d3414d2/1607295736079/indeed_job_search_florida.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4eac35e8e827d42a79265/t/5fc4fbef4f983757207ba1f1/1606745072450/nystce_study_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c48e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC48E 5016 bytes
SHA-256: 7ee1fd463c28df5f14ec4c9fdacd173cf1fe494b55f674e40f52de73026cca35
font_01_sfnt_off0000d5b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B0 1800 bytes
SHA-256: 6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee
font_02_sfnt_off0000de40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE40 12356 bytes
SHA-256: 55f955a886c8ed696556a0be9a78758546d2028d4ef4bab3dce589886a850031

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