Malicious PDF — malware analysis report

Static analysis result for SHA-256 2711cdded9756986…

MALICIOUS

PDF

61.3 KB Created: 2020-11-26 10:24:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d5d8ed8a495c6d379b4a4d2582b021b5 SHA-1: d9410c88aaf9c0cbd8c967f111d5618a6f290e31 SHA-256: 2711cdded9756986bb6de93192a5c4940e824af0602f5fa3dffc0b3c51cb77f1
214 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to redirector infrastructure. The primary malicious URL identified is https://ggtraff.ru/123?utm_term=minecraft+knockback+stick+ps4, which is flagged as a known malicious redirector. The document's structure and the presence of numerous external links suggest an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

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
  • 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://ggtraff.ru/123?utm_term=minecraft+knockback+stick+ps4 In PDF document text
    • https://dodafuwunolig.weebly.com/uploads/1/3/4/0/134016835/rogurozenosu_tikoz_jujobifejarefus_tosikemenu.pdfIn PDF document text
    • https://gonoloxezejuje.weebly.com/uploads/1/3/1/4/131410007/2aeaed4.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/fonukimodoxebubokaka.pdfIn PDF document text
    • https://noduxureravit.weebly.com/uploads/1/3/4/7/134743755/6673649.pdfIn PDF document text
    • https://komamopiragi.weebly.com/uploads/1/3/4/4/134444029/juneka-tagebajejaz-fevogavagoje.pdfIn PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/dapakolun.pdfIn PDF document text
    • https://gotedimonov.weebly.com/uploads/1/3/4/7/134761190/884374d5c479ca.pdfIn PDF document text
    • https://midepixa.weebly.com/uploads/1/3/4/6/134622545/bogupozagiji-rixozumusinileb-vuxonu.pdfIn PDF document text
    • https://wiriluwakuzukar.weebly.com/uploads/1/3/4/3/134316185/7d791b.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/joterige/53882912696.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/kadedadeb.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/lejewugawafajabo.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/rewezugaxijotim.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/agnosticismo_filosofico.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/android_developer_console_api.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_off0000b07c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB07C 5272 bytes
SHA-256: 356ba2cc5b708376e06acd9d8d394522cb3d1391eb9acdc8ab4915a4dd746d9b
font_01_sfnt_off0000c28e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC28E 10700 bytes
SHA-256: 0532c980225e8ecd70a5ef1f57af9c30f8f7086966c2e406601f88c6c8f631fe

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