Malicious PDF — malware analysis report

Static analysis result for SHA-256 11077311426f4555…

MALICIOUS

PDF

74.8 KB Created: 2021-03-31 10:57:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49b8497727df6c9e581989db87f847bf SHA-1: 766866415fb1e06639ecba59d3544bd144f29f18 SHA-256: 11077311426f4555ef1b336fbedcaff5e33672600abaf79c08fc8a515f6cfe27
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. The embedded URL suggests a lure for users seeking free templates, which is a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs indicate a potential for malicious content delivery.

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://jumiwimov.ru/123?utm_term=free+letterhead+template+ai
    • https://static.s123-cdn-static.com/uploads/4408184/normal_5fc8704ed3b82.pdf
    • http://futup.ru/mudras_to_help_you_sleepkq5tn.pdf
    • http://kipegujodup.getenjoyment.net/applied_linguistics_branches.pdf
    • http://lijonotogi.scienceontheweb.net/34111150106.pdf
    • https://cdn-cms.f-static.net/uploads/4502188/normal_606359d590e8b.pdf
    • http://dokakepitizix.medianewsonline.com/the_economist_magazine_free_download_2020.pdf
    • http://jusapp.club/navy_n_codes_n803d51.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6bb53ee1-9f6f-4a74-a918-07174cdf03c2/sentry_fire_safe_model_1100.pdf
    • https://s3.amazonaws.com/pafexegud/72692751104.pdf
    • https://s3.amazonaws.com/xugigabitulu/52110189737.pdf
    • https://uploads.strikinglycdn.com/files/96f8c9ab-cbb8-4c42-a2d0-869592d5ac8b/dell_optiplex_760_specs_32_or_64_bit.pdf
    • https://s3.amazonaws.com/jopomodilamego/meliwusunademafobilamib.pdf
    • http://supajiwa.myartsonline.com/fire_safety_signs.pdf
    • https://uploads.strikinglycdn.com/files/76dac686-8202-43b1-8f46-f79de4edca7c/highway_safety_ratings_2016.pdf
    • https://s3.amazonaws.com/lowuwofuxali/karmasandhan_bengali_paper_today.pdf
    • https://uploads.strikinglycdn.com/files/d5d166a6-ab19-4dbc-801f-d4d699dadc30/brother_mfc_7860dw_printer_driver_download.pdf
    • https://s3.amazonaws.com/jiguwuzobozobaz/45556937005.pdf
    • https://uploads.strikinglycdn.com/files/20faeeaf-5382-4a9b-8130-95f9ed7143d1/guardian_vs_petsafe_wireless_fence_for_stubborn_dogs.pdf
    • https://uploads.strikinglycdn.com/files/aef704f1-3a96-433f-a26c-0922810648e2/what_hunger_games_catching_fire_character_are_you.pdf
    • https://uploads.strikinglycdn.com/files/39a486d3-7253-49aa-83ed-ef8b87bdf637/tuwusisuwatod.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_off0000e8b7.bin
a07fa46a09b46012c535f0ec9bc296874561d586c74edc3aef1087746311465a
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B7 4976 bytes
font_01_sfnt_off0000f972.bin
0c5cfb45cd44935e69fdb66e3de1ce412481d1c370a97437d4e3d7917b9ee1d9
pdf-font-stream PDF embedded font (sfnt) at offset 0xF972 10712 bytes