Malicious PDF — malware analysis report

Static analysis result for SHA-256 bca1e2a020951343…

MALICIOUS

PDF

105.6 KB Created: 2021-03-07 10:52:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45adcbfe19ff253571b6cf7b091e1bbc SHA-1: dee5872751bc96154096328acf36bc44e7fdd340 SHA-256: bca1e2a020951343c431121712c456516ec93113a1b26da5c11c0b8c5adf1f50
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to software, aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dafemum.ru/aws?utm_term=how+to+arch+text+in+vinylmaster+cut+4.0
    • http://mkr-olimp.info/graco_fastaction_fold_click_connect_travel_system_base5wg1g.pdf
    • https://cdn.sqhk.co/pekobenew/ngh3Egh/gmail_inbox_app_themes.pdf
    • https://cdn.sqhk.co/bogulevim/4WiC7ii/luke_bryan_drink_a_beer_song_lyrics.pdf
    • http://datujizid.iblogger.org/butterflies_episode_1_full_apk.pdf
    • http://watomidipokaki.22web.org/nuwunefupamalufaki.pdf
    • https://cdn.sqhk.co/gadapapar/WqDmgc1/44646208321.pdf
    • https://cdn.sqhk.co/tamejenonisi/frUihKK/sefodonaposubusagilozap.pdf
    • http://totufozumad.iblogger.org/78187903947.pdf
    • http://reduslimitalia-oficial.site/matepurarozamozizi6pyxy.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2b247d72-7b9e-47a8-9a89-5d000a131fbf/html_and_css_design_and_build_websites_by_jon_duckett_download.pdf
    • https://uploads.strikinglycdn.com/files/e5078a37-5cd0-4d89-802a-bc4e425c4c8c/the_oedipus_plays_of_sophocles_shmoop.pdf
    • https://s3.amazonaws.com/jidagafinuxesu/14968091666.pdf
    • https://s3.amazonaws.com/mosezavor/nuxibule.pdf
    • http://pudekixepubaz.epizy.com/gejojavapaxuwofimu.pdf
    • https://uploads.strikinglycdn.com/files/88ce002b-c909-498b-83f3-85905a84be0f/fomukunewapo.pdf
    • https://uploads.strikinglycdn.com/files/69d2c8b6-bf96-427b-a599-8c1b64ca62f9/57259110325.pdf
    • https://s3.amazonaws.com/supefujoxopubu/armenian_alphabet_keyboard.pdf
    • https://s3.amazonaws.com/nupotukig/horizon_zero_dawn_freeze_trial_guide.pdf
    • http://nadiripu.epizy.com/eclipse_java_windows_8_64_bit.pdf
    • http://gemixeferakin.rf.gd/viraxewotujaz.pdf
    • https://s3.amazonaws.com/sejakopa/ragnarok_mobile_belmond_ellen_minstrel_answers.pdf
    • https://uploads.strikinglycdn.com/files/c70659ec-e89f-4972-8031-cc705e7d3126/how_to_connect_lg_bluetooth_headset_to_samsung.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000148d1.bin
f4bed1eb1ada8d733541b5c781589fe5e663ab352db0358ff9465c3eb0360b5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x148D1 5812 bytes
font_01_sfnt_off00015d3b.bin
8d6c0e0d4bf53435289b1246e723b6c56640f32d169655cc8b79d56bec4a975e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15D3B 5584 bytes
font_02_sfnt_off0001702f.bin
ba4eb93ea31261dbcfb8676a49dbb87cc95d600af6cf7656ae13a004847e7c4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1702F 11824 bytes

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