Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bba92e8376f3ff0…

MALICIOUS

PDF

82.2 KB Created: 2021-03-27 20:10:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 6ba6661a04b6df88846e453477cba867 SHA-1: d3e242d29afccd0f07c73f4f4ac7949c2438c558 SHA-256: 8bba92e8376f3ff0549573c2ee98f57ba6ff6dc5c383b9c89a39cfe5aeec2480
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site for further exploitation or credential harvesting. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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/wix?keyword=clan+of+saar+tech+path PDF link annotation
    • http://fewutame.getenjoyment.net/turban_decision_support_and_business_intelligence_systems.pdfIn PDF document text
    • http://dakisemakegag.sportsontheweb.net/8671730705.pdfIn PDF document text
    • https://cdn.sqhk.co/midijanere/hegeic7/dexefoliv.pdfIn PDF document text
    • http://vumajuzatijerak.getenjoyment.net/zoxijapuworijawamuwefomab.pdfIn PDF document text
    • https://cdn.sqhk.co/taxeseta/hfshhe2/ataraxia_definition_in_greek.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutowede/jchdqiw/phoenix_arizona_news.pdfIn PDF document text
    • https://cdn.sqhk.co/mazasofuw/0rhjgcX/monkey_hot_guns.pdfIn PDF document text
    • https://cdn.sqhk.co/tilesoxeg/gjimNJO/84743882766.pdfIn PDF document text
    • http://xinuvaro.sportsontheweb.net/what_does_8_beeps_mean_on_a_dell_laptop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/daselex/tizomalebapoxamef.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/39172593414.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/android_studio_sdk_missing_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/hbl_challan_form_for_ma_punjab_university.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/12477960650.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/magnetic_metal_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/mh_cet_law_2019_admission_form.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/43462835989.pdfIn PDF document text
    • http://dupepoge.onlinewebshop.net/30662423897.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/52668319115.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/beautiful_creatures_full_movie_watch_online.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/speed_queen_front_load_washer_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/xufim.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/us_army_field_surgery_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/kumevabubal.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e29b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29B 4864 bytes
SHA-256: cb50fe0c370e2431461aab1976c8d33843ea21339db389d29a03c00dd068cc84
font_01_sfnt_off0000f322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF322 10648 bytes
SHA-256: 3cdc5bba6faf1021e7cdd0dfa619b21b1917ec7adefbe5e01f207f78323de8d9
font_02_sfnt_off0001177e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1177E 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd
font_03_sfnt_off00012cab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CAB 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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