Malicious PDF — malware analysis report

Static analysis result for SHA-256 754cffb89b3007f9…

MALICIOUS

PDF

78.1 KB Created: 2021-04-06 06:47:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b43fe96bc8533a23b42325f1737a746 SHA-1: 6d6e496501c156f46c289c4d2ec8bfd93e46008d SHA-256: 754cffb89b3007f953e8efa7da8312e2a5969b9c069e259cb8dc9e44a9cdf21a
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, with a high risk score. It contains an embedded URI pointing to a suspicious domain, suggesting it's designed to redirect users to a malicious site. The document body, though heavily obfuscated, contains references to 'free cv template microsoft word', indicating a social engineering lure. No scripts were extracted, but the presence of external URIs and the overall malicious verdict strongly suggest a phishing or malware distribution attempt.

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://botokaw.ru/123?utm_term=free+cv+template+microsoft+word
    • https://cdn.sqhk.co/kuzetuzame/eibjgpU/49339804696.pdf
    • https://cdn.sqhk.co/sakiforivona/6GYiNjd/trick_shots_fortnite_code.pdf
    • https://cdn.sqhk.co/rapovixovuti/e19iiij/vomiting_bile_covid.pdf
    • http://yildirimotobursa.com/lincoln_electric_weld_pak_125_hd_wire-feed_welderauy4c.pdf
    • http://salet.store/savojifononevovejenanzcjxk.pdf
    • https://cdn.sqhk.co/guzowozuk/hfFibja/66069434796.pdf
    • https://static.s123-cdn-static.com/uploads/4469358/normal_5fc8cfb6dfc7a.pdf
    • https://cdn-cms.f-static.net/uploads/4376870/normal_5fd9182b1e1a2.pdf
    • https://static.s123-cdn-static.com/uploads/4427284/normal_5fff606e6dfc4.pdf
    • https://cdn-cms.f-static.net/uploads/4459621/normal_5fd74f0f8c6fa.pdf
    • https://cdn-cms.f-static.net/uploads/4447280/normal_5fd6cddc24957.pdf
    • http://sidikapefujuxe.22web.org/android_app_update_over_wifi_only.pdf
    • https://cdn.sqhk.co/mudebijutene/jjg0Kib/money_lobbying_definition.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fa217dc4-e2df-496e-8d4f-9cd7dd4660ed/dungeon_floor_plans.pdf
    • https://s3.amazonaws.com/putelekireza/dantes_inferno_mark_musa.pdf
    • https://uploads.strikinglycdn.com/files/5d7a13f3-e6aa-40ec-af9e-008defbabae4/dell_latitude_e7450_dimensions_cm.pdf
    • http://tinuzutajalik.epizy.com/sowofo.pdf
    • https://s3.amazonaws.com/mivokozibu/beauvais_lake_fishing_report.pdf
    • https://s3.amazonaws.com/gapuruxumeg/stranger_things_season_3_neverending_story_song_lyrics.pdf
    • http://nanesipub.rf.gd/91116746014.pdf
    • https://uploads.strikinglycdn.com/files/cb956790-c611-40d4-8684-b05026bb719b/how_to_get_rock_band_dlc_for_free.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_off0000f5a6.bin
d65868dd1d8adc1d95945591d5d759b476bcd9a7df07d3508e5c9b11bf285831		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A6 5408 bytes
font_01_sfnt_off0001080d.bin
c2ae765a3f76af1b97eef6e7830b99749d9b0e459fa695c1a33fe1072241c875		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1080D 10308 bytes

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