Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca78703ae41bc0fb…

MALICIOUS

PDF

82.7 KB Created: 2021-03-26 07:19:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 091192ab38db5c48c3e7b47c622116b7 SHA-1: d5dc5ef91a0631e66ff5f9f9ac49efd019a9d30d SHA-256: ca78703ae41bc0fb89b5f839e80239c160edbbe12f591bfd3274c732aeb2783d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, suggesting it is part of a phishing campaign to trick users into downloading further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of external URIs and the overall detection profile points to a downloader or phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://golowaki.ru/123?utm_term=windows+media+player++for+macbook+air
    • http://chempion.coffee/39132916272gabcg.pdf
    • http://mozaduz.mygamesonline.org/what_is_functional_analysis_in_behavior_therapy.pdf
    • http://hookup755.fun/zavaxiwiy3b1p.pdf
    • http://fewizoge.22web.org/axis_mutual_fund_common_application_form.pdf
    • http://jesibijifinuz.mywebcommunity.org/jobomu.pdf
    • http://vivubowi.getenjoyment.net/2913128662.pdf
    • http://prizinsta.online/what_model_kindle_is_d011005wv4l.pdf
    • http://help-feedback-amzn6.xyz/british_dressage_intro_c_test_downloadhan2x.pdf
    • http://hurricane1.space/bojack_horseman_season_1_episode_12_quotesjhja5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tokejavopif.rf.gd/salamander_dichotomous_key_answers.pdf
    • https://s3.amazonaws.com/muvemasoxaji/20094105476.pdf
    • https://fd0ef26f-7b8f-4c91-b3b2-19f7ec93487a.filesusr.com/ugd/4174bf_d7a5767d786d4505afa496a7b7dc3d43.pdf?index=true
    • https://d9226533-59f4-4737-ae77-cfa9cdee5378.filesusr.com/ugd/d7c203_4b81f39079cd4abea3a4a0c82d1868a0.pdf?index=true
    • http://majezomisi.myartsonline.com/ascaris_lumbricoides_adalah.pdf
    • http://fojisar.rf.gd/gubegisawewux.pdf
    • https://uploads.strikinglycdn.com/files/a7b31a91-a81d-412b-b5b1-d22086c0b015/88468530870.pdf
    • http://wewufesupupefon.rf.gd/download_atlantic_fleet_lite_full_version.pdf
    • https://uploads.strikinglycdn.com/files/62d55667-a10b-465c-98f1-30e0d01e26de/99672005860.pdf
    • https://uploads.strikinglycdn.com/files/fca9f63d-bac6-4e58-8530-1f64bd528952/how_to_write_a_play_script_examples.pdf
    • https://d0f5cf02-e55f-42e7-ba97-8a4d5a2b8368.filesusr.com/ugd/7f59a0_3b44ec6979f640318df3614790c45cb0.pdf?index=true
    • https://s3.amazonaws.com/zolerazowubow/edipo_rey_resumen_largo.pdf
    • https://uploads.strikinglycdn.com/files/7ce5095b-3d01-479d-96e2-b53f58be11db/98303265381.pdf
    • https://s3.amazonaws.com/veraxawewib/hindi_love_story_album_video_song.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_off0001041e.bin
8047a481b41d661f3d35ba4b891662dd3e72c418628041c044d864deab45b34e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1041E 5712 bytes
font_01_sfnt_off00011793.bin
9690e652503559adf57858c3a4345b90ba7f69af812c9bf0f135867532f6f213		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11793 11084 bytes

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