Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e78e7d43a688e6f…

MALICIOUS

PDF

107.7 KB Created: 2021-04-27 16:24:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 77818bb821cd442ee5f8f36e182b4bb8 SHA-1: 2575ae99f8f6a66c5fc892369ed5da270e3b0b5a SHA-256: 4e78e7d43a688e6f3c040f260d6665b222c9291930b174fc5f2846df57f92075
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/strik?utm_term=why+does+odysseus+decide+not+to+stab+the+cyclops+with+his+sword PDF link annotation
    • http://xofelivigavas.mywebcommunity.org/wojijefarolotugufor.pdfIn PDF document text
    • http://boraguw.medianewsonline.com/albumina_en_orina.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/57882714821.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/how_to_change_wifi_password_dlink_dir_868l.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/jovuwedomupemifun.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/metal_texture_pattern_photoshop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef302166-4f66-424c-92e2-fe413d1f6cb5/lewoloko.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/divotofifajefelaxus.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/80023082705.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06dcfa21-6127-4c58-91bd-6cc94cd8a078/army_apft_score_chart_run.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/jopiruso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c9b7e30-3be3-4883-ae92-e016c63a8518/how_fast_do_airbags_deploy_in_km.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/47035023613.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/dagogaxono.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/lenufataxebiwasa.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/blush_bridal_formal_wear.pdfIn PDF document text
    • http://sadoboxijowem.myartsonline.com/39916925523.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/collector_for_arcgis_android.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/fire_and_ice_lake_tahoe_ca.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c698617-12d5-4c8f-845c-e901bddb1bda/why_did_my_cursor_disappeared_windows_10.pdfIn PDF document text
    • http://zejibanunepi.myartsonline.com/39449785101.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000159ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x159EA 5508 bytes
SHA-256: 452f73e7f3b2de12805e9d00faa8d9a45226f817b35dffb9735d7c7578beb45f
font_01_sfnt_off00016c78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C78 6168 bytes
SHA-256: 9857c94a8075f63bd19945fab8d021764579c4fd6569a81599841c1724c18950
font_02_sfnt_off00017b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17B5F 11028 bytes
SHA-256: b7c12c78ed64870c303b5351f777ccd9d22764898e3379c0a2ee3b39381fa279

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