Malicious PDF — malware analysis report

Static analysis result for SHA-256 6edad4123da79111…

MALICIOUS

PDF

169.9 KB Created: 2021-03-16 21:00:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb16dba044537345fa09aac2c714b660 SHA-1: be78e7582e83f5b45734a1b832f441f89eb9adfc SHA-256: 6edad4123da7911127383422f7a7c09b0a40521685ac38fd3b358f311dd4ad0f
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, 'druttle.ru', which is likely used to host a phishing page or distribute further malware. The PDF structure itself is also flagged for duplicate object bodies, indicating potential obfuscation or malformation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9850

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=huye+de+las+pasiones+juveniles
    • https://cdn.sqhk.co/fetedudi/2GgihML/airdroid_desktop_free.pdf
    • https://cdn.sqhk.co/sunalikefazo/Xomwgfz/72145722970.pdf
    • https://cdn.sqhk.co/sepokafaru/MvLhajc/goviwunajetajapibefejav.pdf
    • http://samelike.site/audio_cutting_software_freezkm3i.pdf
    • http://fepemewavitik.66ghz.com/neketugewitunole.pdf
    • https://cdn.sqhk.co/dudugetogi/tZ2jb6h/woweresenalemijilini.pdf
    • http://milktree.store/reinforced_concrete_design_solved_problems76bsx.pdf
    • http://www19216801.site/letakoloxoriwixugujatak1iyoc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vovuzize/how_to_tell_if_your_bobbin_tension_is_off.pdf
    • https://s3.amazonaws.com/waxegatulo/adaway_apk_v3._1_no_root.pdf
    • https://12dd324c-696b-4d67-8c19-991f3eacec2c.filesusr.com/ugd/eeb7bd_5b4ed665096d4db884f0b0f21edc6eeb.pdf?index=true
    • https://2df7536a-ab64-4dd3-a6ca-98e0eca144a4.filesusr.com/ugd/de578f_cd9df14d58e54706913ed36b0f42d0e0.pdf?index=true
    • https://bad3f395-1638-4667-b349-d6f934eeab49.filesusr.com/ugd/ed2d23_761a1f06857c4df1b9aa7506ff18c0e8.pdf?index=true
    • https://s3.amazonaws.com/xeruxaxer/zedazubumodag.pdf
    • http://wekujugom.epizy.com/gimabogivopud.pdf
    • https://s3.amazonaws.com/loneminovu/kazot.pdf
    • https://s3.amazonaws.com/lopadivupudexa/foraranumon.pdf
    • https://ce55c564-0e79-48ac-bd91-a034cff8554b.filesusr.com/ugd/bd1fc0_8881871d5ae843ec8c12827d6bbb12f3.pdf?index=true
    • https://s3.amazonaws.com/dagasopones/59217290897.pdf
    • https://dcc20dec-0195-4543-b617-cfb82efd15f0.filesusr.com/ugd/30ea26_ea5eab9884bf426990bd91e5e4766029.pdf?index=true
    • http://judixipe.epizy.com/pirates_of_the_caribbean_song_piano.pdf
    • https://s3.amazonaws.com/wemazun/91147134203.pdf
    • http://nusagimedejaj.rf.gd/44886927740.pdf
    • https://s3.amazonaws.com/fujadabez/votuxajowedib.pdf
    • https://s3.amazonaws.com/pibabopuduj/logabumexoxadezepexud.pdf
    • https://s3.amazonaws.com/ninasivol/21677137707.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00025df9.bin
6b7b2b4927397d09aaf230047534277a7915a38914eb7f374927370a89029ddb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25DF9 5056 bytes
font_01_sfnt_off00026f51.bin
f6970c4191d8eacd6d1ac666181d5750a7286555e8087af6770db3da5effaf65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26F51 12340 bytes

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