Malicious PDF — malware analysis report

Static analysis result for SHA-256 38d9e92d0639b917…

MALICIOUS

PDF

81.4 KB Created: 2021-01-01 21:27:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 5cb7cc9bd3fb2771a4ac49400d02ca73 SHA-1: 5c27d972d5d0f848bb07ce3472dd1819133f2315 SHA-256: 38d9e92d0639b917537549c07fe30f8ff9a3ad35d94df45a27330c5443ff227f
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffine.ru/strik?utm_term=costume+change+photo+editor+online'. This URL is likely used to lure victims into a phishing or malware download site. The ML classifier also strongly flagged this PDF as malicious, and ClamAV detected it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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=costume+change+photo+editor+online In PDF document text
    • https://cdn-cms.f-static.net/uploads/4497344/normal_5fbc3aa3947f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419410/normal_5f9a35ac3cc5a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370263/normal_5fc5e6f83656c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365542/normal_5f90718326138.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372360/normal_5fe3f924c2b23.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/2f2afac3-1672-4315-81da-18c2026c1451/red_river_flow_north.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a984696-77f3-4fd1-be31-4e3709f6cd72/sq11_mini_dv_camera_operating_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/libinisulopizaxazifikono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faf9fa52-f238-4c15-96eb-e5c4ab6b592c/3214922729.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/492ccf1e-36f7-4e3f-98d8-bb3cafb3a81e/gejakozefa.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/australian_fire_incident_reporting_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/605f016f-de8b-4286-93b0-6320858f04fb/75367993533.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/climograph_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/subefowufosimorisabal.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_off0001011f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1011F 5392 bytes
SHA-256: 0746701208480e8938f3a6457e31c25be9eb5dec38871f1edf80a7b47bab287d
font_01_sfnt_off00011345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11345 10980 bytes
SHA-256: 1eda62051ea3317ad3fc4fa1e6a158556a030e86bdf26f70ad43f1b085ca1f28

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