Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea506cd9d5ec2f9…

MALICIOUS

PDF

100.6 KB Created: 2021-03-12 10:14:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 166ca4f0fe36499385006326dfef221c SHA-1: d63fe3b7bb6abd5ce348b921e7651a183ef26483 SHA-256: fea506cd9d5ec2f9f4ffa615f869ca2145c996510171416a19a0a035c7d9dbb4
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to deliver a malicious payload or phish for information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://kuzutuzo.ru/strik?utm_term=tre+trauma+releasing+exercises+david+berceli
    • https://cdn-cms.f-static.net/uploads/4420604/normal_5fd81f3c15130.pdf
    • http://boomua.site/world_without_fish_freejgyxw.pdf
    • https://static.s123-cdn-static.com/uploads/4378843/normal_5ff13f5371526.pdf
    • http://lollipopa.online/porter_cable_air_compressor_instructionshfun1.pdf
    • https://cdn-cms.f-static.net/uploads/4379486/normal_6038e8d172e77.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/puretulenuza/vimeo_video_er_chrome.pdf
    • https://uploads.strikinglycdn.com/files/6e9f4b27-dc4b-4386-96f0-956d9e523bb1/linebacker_drills_for_high_school_football.pdf
    • https://uploads.strikinglycdn.com/files/931415a1-e57a-4055-85e3-eb413b38575a/womemuluxarol.pdf
    • https://s3.amazonaws.com/fipijife/kubatikesa.pdf
    • https://uploads.strikinglycdn.com/files/b5426ed4-ff9d-4274-bca7-a90071d995fd/kenmore_water_softener_repair_service.pdf
    • https://s3.amazonaws.com/gosete/how_to_bypass_parking_brake_wire_on_car_stereo.pdf
    • https://s3.amazonaws.com/kawotexulozax/how_can_i_connect_network_printer_in_windows_7.pdf
    • https://uploads.strikinglycdn.com/files/0fabe29e-ab48-430c-9706-c7674fe53c79/tageligulexo.pdf
    • https://s3.amazonaws.com/mogipegi/i_see_fire_piano_sheet_music_free.pdf
    • https://s3.amazonaws.com/jamuluvuvava/brookfield_community_school_chesterfield_uniform.pdf
    • https://s3.amazonaws.com/kufazete/texas_dmv_driving_test_study_guide.pdf
    • https://s3.amazonaws.com/fojaxexino/kepizipi.pdf
    • https://uploads.strikinglycdn.com/files/1171ae36-27c6-4658-b7c7-bf461acc89ec/how_to_activate_tableau_desktop_license.pdf
    • https://s3.amazonaws.com/zepifudoxapo/vupalugugajetoxeforuk.pdf
    • https://s3.amazonaws.com/bokelur/carfax_report_canada.pdf
    • https://uploads.strikinglycdn.com/files/3f3b42a1-32f2-4d65-a9d9-ad37861622c1/kelapa.pdf
    • https://uploads.strikinglycdn.com/files/5559fa52-a128-48b0-9697-dd940270e1d9/mini_dv_camcorder_for_sale.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a86.bin
e1cd723e49d062341c9806745e0bc90bfb4b2985a8248b5a6cb8dbeff0dd7245		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A86 10496 bytes
font_01_sfnt_off00013cef.bin
ca9914ca76df16c021afecb6f50e15e28b2d5a92f8ec0eb4f2b5c388cc76cb16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13CEF 5248 bytes
font_02_sfnt_off00014eab.bin
bf3fb0c686182252aeafa25a06b206428612f37567757809edb24acdb16d64a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14EAB 12192 bytes
font_03_sfnt_off0001762a.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1762A 4324 bytes

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