Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6b4fec998196131…

MALICIOUS

PDF

86.8 KB Created: 2021-03-19 07:44:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b1eae9fe26d208184b60bfb30a84e5b SHA-1: d998516d810532498a70dfb17b8c364a584e1fca SHA-256: e6b4fec998196131f24841a974cf07ea65a25d965d7e2fb30ba7870f9cae05f3
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 numerous embedded URLs, one of which is `https://zajinet.ru/wix?keyword=true+wine+cooler+manual`, presented as a document title. The presence of these URLs suggests an attempt to redirect the user to malicious sites, likely for credential harvesting or further malware delivery.

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://zajinet.ru/wix?keyword=true+wine+cooler+manual
    • http://oficialshoes.site/masaru_emoto_water_experiment_zamzamghfp3.pdf
    • https://cdn.sqhk.co/vafodagusun/hK5ihS1/monster_trucks_games_unblocked.pdf
    • https://cdn.sqhk.co/valujoper/tgiic1q/bad_2_bad_extinction_gear.pdf
    • https://cdn.sqhk.co/wadupaxi/gjdgggd/zetekutakevixizix.pdf
    • http://sodaapp.club/why_did_japan_attack_manchuria_in_1931eg1tf.pdf
    • https://cdn.sqhk.co/najiligopej/mhdicih/spiral_jump_game.pdf
    • http://copyright-supporthelp.com/36940612734meew4.pdf
    • http://snt-br.ru/93018828433oriu4.pdf
    • http://storezone.info/tazubafefapured9xqe.pdf
    • http://nakrutkavk.site/descargar_formato_de_cedula_venezolah3u1b.pdf
    • http://ionatr.fun/96036238560z8o7a.pdf
    • https://cdn.sqhk.co/gaxudofexal/jcihNgf/children_s_read_along_books_with_cd.pdf
    • http://roman-holidays.shop/51052507352gc4xw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/beff08c3-1d19-4dcd-ad53-54b4c84232cd/tesla_model_3_performance_price_reduction.pdf
    • https://uploads.strikinglycdn.com/files/7ad14aa9-1412-4297-bbc8-ce2f1ba7f158/html_table_cell_background_color_style.pdf
    • https://uploads.strikinglycdn.com/files/8123c47b-9abd-431a-92c5-ccb3059868f0/fidomupesuduxenuvuv.pdf
    • http://bosirizowu.rf.gd/paxuvogameserujexo.pdf
    • https://uploads.strikinglycdn.com/files/a934caee-d8fd-4ad8-a867-57b034a011b7/dryer_not_drying_clothes_maytag.pdf
    • http://godizob.rf.gd/56901795238.pdf
    • http://savagit.rf.gd/codycross_answers_group_23_puzzle_3.pdf
    • https://uploads.strikinglycdn.com/files/9dbc43cd-44b8-4afd-9f30-ecd1ce63a038/buralej.pdf
    • http://lugogugur.rf.gd/lekuvesolaxufapezu.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_off000115b6.bin
d567724b0f928e98b105b16e9e02f51af876ef978919f61efe1d9b8d92befbfa
pdf-font-stream PDF embedded font (sfnt) at offset 0x115B6 4808 bytes
font_01_sfnt_off00012607.bin
6d7d15704b0758f3346cef56c00405e97a1cb97dc9ef4a8f89d5bf3af2ac6e28
pdf-font-stream PDF embedded font (sfnt) at offset 0x12607 11400 bytes