Malicious PDF — malware analysis report

Static analysis result for SHA-256 f107418a97f046fe…

MALICIOUS

PDF

72.2 KB Created: 2021-02-23 19:15:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 2114f3055bc6f321d133d686bf548f00 SHA-1: 0534eadd244bd624d7d29f2cc3b4be7834f96fda SHA-256: f107418a97f046fe1bc0778b79a7dc324055c5647e6d4c17f98741c815087017
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a site offering free GTA money, a common lure for phishing or malware distribution. The presence of embedded URLs and the nature of the lure strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wix?keyword=free+gta+money+no+survey PDF link annotation
    • https://bufudelazevel.weebly.com/uploads/1/3/4/7/134734798/6ab9a0f0da362.pdfIn PDF document text
    • https://cdn.sqhk.co/vamapoludi/A8hfihY/fedoguwerewijituni.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486763/normal_5ff27455f3e72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505363/normal_5fd918d82ff1d.pdfIn PDF document text
    • https://palotuzumi.weebly.com/uploads/1/3/5/9/135991270/nakepaze.pdfIn PDF document text
    • https://cdn.sqhk.co/bolukawet/jhxgiXm/us_dollar_to_toman_converter.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417216/normal_5ff77b88cc4ad.pdfIn PDF document text
    • https://cdn.sqhk.co/zasokolof/GOvDKhb/mckinsey_insights_app_store.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403557/normal_601b245c5d676.pdfIn PDF document text
    • https://tadilagene.weebly.com/uploads/1/3/1/3/131381422/tovalidiw-sifitin.pdfIn PDF document text
    • https://muxetomanudone.weebly.com/uploads/1/3/1/4/131406273/jadifumus-luneda-japevun-xavuwabimewob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372104/normal_6031338253cd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393022/normal_5fe6b27b1b66c.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/donake/70566838921.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/sasarad.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/wow_bfa_resto_druid_mythic_plus_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/tatuwosege.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/reckless_love_cory_asbury_sheet_music.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_off0000df19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF19 5088 bytes
SHA-256: f5a4a9e25a3f0661e60a64c0d934d0c445e735018fbdca420037ed16ca0af0df
font_01_sfnt_off0000f069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF069 10300 bytes
SHA-256: 642fc73b509719d3e10a0fabafb7f0dcf83fc1d468b044d053417042ef81af11

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