Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfc8add8d660a6ec…

MALICIOUS

PDF

68.1 KB Created: 2020-11-20 05:10:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 0f2c794bd2bdd0212332e704ed157558 SHA-1: 5334166058656db6f06ce1bf19822c6e69cfc8f9 SHA-256: dfc8add8d660a6eceb33f66c2db7d7356008a627b1e35151bc14818b5e1e0907
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to PDF files hosted on various domains, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs are the primary indicators of compromise, directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/123?utm_term=honda+adaptive+cruise+control+manual+transmission PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374682/normal_5fb275a1d6849.pdfIn PDF document text
    • https://kenodijegubiv.weebly.com/uploads/1/3/4/5/134501598/zoretafemigeganisep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412388/normal_5fa6a514ec7aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379970/normal_5f8b74f3f4078.pdfIn PDF document text
    • https://dudasajaje.weebly.com/uploads/1/3/4/3/134362454/zorowirigotodapewolo.pdfIn PDF document text
    • https://mepetimis.weebly.com/uploads/1/3/1/4/131483418/tojili_wazegesolera_gamiwusejete_mazipojirusis.pdfIn PDF document text
    • https://gudosotavuna.weebly.com/uploads/1/3/4/7/134722070/gupekojesujili_nivag.pdfIn PDF document text
    • https://gadigode.weebly.com/uploads/1/3/2/6/132680949/6560368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370080/normal_5f8d6b79531c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f88d1e75d3d9.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/tudawufed/jetawodexexipotok.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/damorosabob.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c1af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1AF 5240 bytes
SHA-256: 264059c2bf226a782379daf6fb61d904d0058ac7f1c55482b24fe2fb64b22d8a
font_01_sfnt_off0000d36a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD36A 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_02_sfnt_off0000decd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDECD 10644 bytes
SHA-256: 6d6bfeb25800102cfd0b0627a1cbff24ea5f6cb575d4c6075c260b5897d91eb1

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