Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bb6446f15cb78b7…

MALICIOUS

PDF

81.8 KB Created: 2021-04-13 20:11:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8cb60a2988fa0d79887d2dc81b28d82 SHA-1: 7dd1904e4ea1645f240a6af63ee7bf92de243d13 SHA-256: 7bb6446f15cb78b7ad8ea503ea05abc806acf93bc97f833e73b66eb76d878090
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to be a lure related to a car sale, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/strik?utm_term=used+2013+dodge+charger+se+for+sale
    • https://mukoxawav.weebly.com/uploads/1/3/4/6/134627731/63aa6.pdf
    • https://cdn-cms.f-static.net/uploads/4448985/normal_604db0a2c0811.pdf
    • https://cdn-cms.f-static.net/uploads/4497081/normal_60367f9838d25.pdf
    • http://gozatelaji.22web.org/letter_from_birmingham_jail_communicates_the_main_idea_that.pdf
    • https://cdn-cms.f-static.net/uploads/4384308/normal_6063948e832ba.pdf
    • http://widarexidifazi.iblogger.org/fifekikotukadefajeja.pdf
    • http://forajetivajuw.iblogger.org/benedict_test_for_reducing_sugars_lab_report.pdf
    • https://jomufoxubibad.weebly.com/uploads/1/3/1/1/131164047/2112190.pdf
    • http://fojozefamofu.22web.org/zazoselexuzotikek.pdf
    • https://cdn-cms.f-static.net/uploads/4405660/normal_6059660497358.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/dea36c9f-8dff-4ca6-a01a-edeabb656005/what_does_going_back_to_my_roots_mean.pdf
    • http://jusarim.epizy.com/manual_airway_suction_devices.pdf
    • http://mufupif.rf.gd/9834145037.pdf
    • http://babazemo.epizy.com/80256778618.pdf
    • https://uploads.strikinglycdn.com/files/e7610942-05ee-4a87-8f7f-e560d76c0b80/should_everyone_go_to_college_stephanie_owen_and_isabel_sawhill.pdf
    • http://xedonufil.rf.gd/furamirokew.pdf
    • http://zasegusof.epizy.com/16811453150.pdf
    • https://uploads.strikinglycdn.com/files/e605706d-85a1-432c-a20a-a24149de9450/9654634508.pdf
    • https://uploads.strikinglycdn.com/files/0409ef84-af69-48f9-ba34-81701401ffd8/refatedupu.pdf
    • http://gaxegumulot.rf.gd/87384264770.pdf
    • http://magotabitujotu.rf.gd/97666558965.pdf
    • http://xovuxeke.epizy.com/carotida_interna_ramas.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_off0000f467.bin
5c3b07b25380200402026043d64a774e1e45da0364be832b1f3c2f7764a39dce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF467 5320 bytes
font_01_sfnt_off0001067f.bin
1b9eb82cfc0d356b70a001f33b2bbe2d1387f552bd3a8e7bb76e6c2c2f3b1022		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1067F 10832 bytes
font_02_sfnt_off00012b8d.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B8D 4324 bytes

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