Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9875e56594c557a…

MALICIOUS

PDF

72.9 KB Created: 2021-02-14 09:15:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f6f2c4ed52afa58b7a90bfcde246eb1 SHA-1: 42b9c5b07d80e140fa843d130e5603112880f623 SHA-256: c9875e56594c557a600afe9debb88a395524e0bb02b728607750fd46a7e32563
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to a suspicious domain, 'druttle.ru'. While no scripts were explicitly extracted, the presence of an embedded URI in a malicious PDF strongly suggests an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=baker+memorial+methodist+church+st+charles+il
    • https://cdn-cms.f-static.net/uploads/4503987/normal_5fd36af0bfaf6.pdf
    • https://static.s123-cdn-static.com/uploads/4447271/normal_5ff19ca7eb9e8.pdf
    • http://ruzoboxilotazex.22web.org/marching_band_snare_drum_sheet_music.pdf
    • http://fiwazurenorin.iblogger.org/tixonatani.pdf
    • https://static.s123-cdn-static.com/uploads/4419204/normal_60024e1d23157.pdf
    • https://cdn-cms.f-static.net/uploads/4423442/normal_601ae63232785.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://fadowudi.rf.gd/alloderm_ordering_information.pdf
    • https://s3.amazonaws.com/pajeriramal/acc_aha_guidelines_cholesterol_2017.pdf
    • https://s3.amazonaws.com/woberiz/91833365707.pdf
    • https://s3.amazonaws.com/kigavanus/hdfc_mutual_fund_redemption_form.pdf
    • https://s3.amazonaws.com/mipeboro/72630031038.pdf
    • https://s3.amazonaws.com/fedure/93698671364.pdf
    • https://s3.amazonaws.com/tunenijexe/evolutionary_arms_race_video_worksheet_answers.pdf
    • http://kojajopi.epizy.com/city_background_png_images.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1bf.bin
79cc27fb9b3b063b88c6ef5cb2285226fe71e53eb744a3f4363f422ec9d839fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1BF 5068 bytes
font_01_sfnt_off0000e2f7.bin
43a91140b23da9c8fff743a2e1876269b875e8b059af33bb59932f97e763fd64		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F7 10860 bytes
font_02_sfnt_off000107f4.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107F4 4324 bytes

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