Malicious PDF — malware analysis report

Static analysis result for SHA-256 009d08ceb0688ab5…

MALICIOUS

PDF

61.3 KB Created: 2020-12-24 07:22:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a110a8c959075f9761e4fd0ed35385e7 SHA-1: 23dbd1c4a2b48562c413457879ce44830f8eab88 SHA-256: 009d08ceb0688ab50a48c9eb861511f3128b1c84951d42a229699224793f377f
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector URL (https://traffking.ru/strik?utm_term=radio+fm+app+iphone). Another critical heuristic indicates a PDF link farm, with one example URL being https://s3.amazonaws.com/gupuso/bwv_578_piano.pdf. The ML classifier and ClamAV also flagged this PDF as malicious, suggesting a phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://traffking.ru/strik?utm_term=radio+fm+app+iphone In PDF document text
    • https://static.s123-cdn-static.com/uploads/4391009/normal_5fe0131130e09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369162/normal_5f899fe250498.pdfIn PDF document text
    • https://warogowi.weebly.com/uploads/1/3/1/6/131606132/bifezadawedigakusote.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/gupuso/bwv_578_piano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b58c6dc-500d-47ea-8d0e-a058c8b0a8cc/nipafumi.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/orbital_box_diagram_for_potassium.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75ea6809-9107-4739-9fab-b558f5776fd0/espn_games_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/algebra_worksheets_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/pathfinder_shield_other_item.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/cms_web_interface_quality_reporting.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/78376206311.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26cac5b9-835a-42ae-b6bb-a2cf5ef969e3/huesos_de_lagartija_libro_completo_g.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_off0000b3b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3B9 4984 bytes
SHA-256: baddaf55d6dba2742435ebaff2680a6134c89e2c477bb4e846f7385be4777234
font_01_sfnt_off0000c492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC492 10696 bytes
SHA-256: 2ee6f3a75915adc539fb042b9a2e926921e99dcaff2514de88cbf863e0505cb8

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