Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee8b12a88d0b9cc…

MALICIOUS

PDF

91.8 KB Created: 2021-04-15 01:06:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77464a1731d335463cd73ad6ccd55ad9 SHA-1: bb601e8a681d80dd701691970fe61ad644858b61 SHA-256: 2ee8b12a88d0b9ccc06d51a4aba64cad9522a0679a5eef257aefd8d0dd798e52
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains multiple embedded URLs, with the primary one being https://lozipotod.ru/strik?utm_term=chuck+palahniuk+books+guts, which likely serves as a lure. The document body, though heavily obfuscated, suggests an attempt to disguise its malicious nature. No scripts were extracted, but the presence of external URIs indicates a potential download or redirection to a malicious site.

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://lozipotod.ru/strik?utm_term=chuck+palahniuk+books+guts
    • http://instapresent.site/dekifalatof1v2j.pdf
    • http://ramifapufebi.scienceontheweb.net/53442568761.pdf
    • http://goxutasabadatum.sportsontheweb.net/castellano_antiguo.pdf
    • https://cdn.sqhk.co/balekunu/eDjcNij/bacterial_meningitis_treatment.pdf
    • http://jotusimemirido.sportsontheweb.net/rijolunonunox.pdf
    • http://sawemawe.mywebcommunity.org/80353917640.pdf
    • http://levitajagukog.scienceontheweb.net/auto_manuals.pdf
    • http://vegifeda.mypressonline.com/electronic_devices_and_circuits_by_sanjeev_gupta.pdf
    • http://idealicaitalia.website/ruxasagabozotolidurisive5z1f8.pdf
    • http://ruguwafe.scienceontheweb.net/fascitis_plantar_y_espolon_calcaneo.pdf
    • http://xolokukifimiv.sportsontheweb.net/wings_of_fire_book_11_read_online_free.pdf
    • http://wowogobofomufu.mygamesonline.org/14798247414.pdf
    • https://cdn.sqhk.co/jopubelo/hevEShf/bifafe.pdf
    • http://jokojujut.medianewsonline.com/13363294946.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dazinibonofobi/crsu_date_sheet_ba_5th_sem.pdf
    • http://lekozuni.epizy.com/jijazis.pdf
    • https://s3.amazonaws.com/povelenavuviw/can_a_beginner_run_5k.pdf
    • https://s3.amazonaws.com/kifutizijebuj/13039024795.pdf
    • http://fapubogodomeduj.epizy.com/church_door_hangers_templates.pdf
    • https://s3.amazonaws.com/kubedukowug/naxekemusaxivitapa.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000114cb.bin
e79d6a1347d10504372c1b7db673ff9dcaa7663d58b7202ee5444827b8b24f3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114CB 5208 bytes
font_01_sfnt_off0001267d.bin
688faa1632542ee4e7dc2e54cef1a389e32ac6b1f48d8c653c8a02dd6daa8a0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1267D 11100 bytes
font_02_sfnt_off00014ccf.bin
2906e013a2c12f8438753706de5a20d0a45d34478d649377d82f29cc76ae0543		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14CCF 16108 bytes

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