Malicious PDF — malware analysis report

Static analysis result for SHA-256 5090b0bce7b0c69a…

MALICIOUS

PDF

99.9 KB Created: 2021-03-10 02:40:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 861a734bd3ac707fec552612cba14dae SHA-1: 7ea43d4a8778867baf42484d8a0f416a8306b5b5 SHA-256: 5090b0bce7b0c69a8d60debac19a20ddeb1677f1cc4897f532ba945ead919bb1
104 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by a ClamAV signature and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a secondary payload or facilitate phishing. The document body, though heavily obfuscated, suggests a lure related to a product manual, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://jumiwimov.ru/123?utm_term=avazzia+pro+sport+manual
    • http://mapotilij.mygamesonline.org/the_trials_of_apollo_1_download.pdf
    • http://fotubobuwenapu.scienceontheweb.net/buroxefixakovezeleji.pdf
    • http://lulilafemavivog.mygamesonline.org/gebuzamok.pdf
    • http://dosaxixapaxa.medianewsonline.com/wawanug.pdf
    • http://midutabumi.22web.org/nibafirebi.pdf
    • http://jojidasusesot.sportsontheweb.net/35773596048.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lipubumili.epizy.com/washington_football_team_helmet_png.pdf
    • http://vesedakowata.onlinewebshop.net/mezunajeridegi.pdf
    • https://ea74ff18-003d-4094-8454-8d7e15e33abb.filesusr.com/ugd/50de67_65a961916c114a228df554f5434ac26d.pdf?index=true
    • http://pexirud.onlinewebshop.net/50069352515.pdf
    • https://uploads.strikinglycdn.com/files/2886b710-3481-4b72-9a1b-50a215375d0d/what_boundary_can_cause_seafloor_spreading.pdf
    • https://uploads.strikinglycdn.com/files/dd363789-f91b-4de5-8ea5-49d88c2aa55c/sekexosikenabaz.pdf
    • http://xibupafuvobiluk.rf.gd/44623609020.pdf
    • http://zeteximezoxa.myartsonline.com/sevigipitefa.pdf
    • https://5c3e38fa-bf2d-4cda-bfdc-19e9a39f2227.filesusr.com/ugd/b3ada4_91a8453470da478c97d611a2b51e2a15.pdf?index=true
    • http://liroporuki.myartsonline.com/pozidavo.pdf
    • http://vuzegemed.rf.gd/fovaki.pdf
    • https://uploads.strikinglycdn.com/files/b9cd6606-d72f-44fc-bad9-89d8218ce1a6/hp_laserjet_3015_service_manual.pdf
    • http://xemigososefof.atwebpages.com/34397928319.pdf
    • http://lufepurobu.epizy.com/what_kind_of_battery_does_my_2017_honda_civic_key_fob_take.pdf
    • https://uploads.strikinglycdn.com/files/4195d8de-43d4-4f38-a8c1-57c0c66d430d/66955214721.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_off00014ae7.bin
cba6107ce324195eed6260cfe244e0c4aa4a9042f3b95502113f1d29a13a4e63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14AE7 5064 bytes
font_01_sfnt_off00015c14.bin
738500013fbb5521930791cb582f1bd3f69023fde0c6427d4affd418ec0482de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15C14 11344 bytes

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