Malicious PDF — malware analysis report

Static analysis result for SHA-256 8369bd6aaaf6da24…

MALICIOUS

PDF

69.7 KB Created: 2020-12-14 16:51:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: c390bd03ac5adcec21ee7ecc2e4a97bf SHA-1: 163efb96b267b2a20bcc8fe1d669f962c832945c SHA-256: 8369bd6aaaf6da24aca00609e01ad5d1af6fa6bfc9e8223bbf4838c64171ec9a
156 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a 'PDF_SEO_LINK_FARM' and an embedded URI pointing to 'trafficel.ru'. The ML classifier and ClamAV also flagged this PDF as malicious, specifically as a phishing trojan. While no scripts were explicitly extracted, the structure and embedded URI suggest a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/123?utm_term=white+pages+dayton+ohio PDF link annotation
    • https://nawopudupavipe.weebly.com/uploads/1/3/4/8/134856820/ruxizo_bowukapizabi_maripope.pdfIn PDF document text
    • https://subolamamojoga.weebly.com/uploads/1/3/4/7/134719430/5ef25457bea348.pdfIn PDF document text
    • https://vadanuburizupi.weebly.com/uploads/1/3/4/9/134901301/riramatit_noxoputujapod.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/5fc0d92f11f6a4198485658d/t/5fc3d1d53485235c863b7571/1606668758966/37800046770.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/popelirebesikajidamemoda.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/glyder_fawr_guided_walk.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/muramixenokapepoluf.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/android_smartwatch_app.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/nimikufowaluwalukujak.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/fitbit_charge_hr_operation_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/lokowuranezevolokuvasu.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/wusowaga.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/27440903456.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfd1b3fdc31513a0fd84d/1606221086993/determine_cost_of_goods_manufactured.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/area_of_triangle_sine_worksheet.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_off0000d3e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E1 5208 bytes
SHA-256: e63e837ea95aecec1f5ba3386c224c0993e2f0c024f9ffa2f999a15a004da7ba
font_01_sfnt_off0000e5ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AE 10636 bytes
SHA-256: 11e8bd3668b2ba055945ec2d2bac24c0c25ccdaa02de575916dadb237eb803be

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