Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e0a40e9c9aff36…

MALICIOUS

PDF

82.8 KB Created: 2021-03-29 21:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dc7652852a56bd079f501b19928042e SHA-1: be636e0c970339a53f7cd1df880545a0f9e88dd3 SHA-256: 60e0a40e9c9aff36dd29418b061f521cd65ae70b3155149245c6d2572682b616
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The ClamAV detection further confirms its malicious nature, flagging it as a phishing trojan. The document body, though heavily obfuscated, appears to contain keywords related to Windows server, likely serving as a lure to encourage users to click the malicious link.

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://lozipotod.ru/aws?utm_term=windows+server+2012+r2+datacenter+or+standard
    • http://vovidumuf.22web.org/93949157187.pdf
    • https://cdn-cms.f-static.net/uploads/4424328/normal_605cb8efc2e0d.pdf
    • https://static.s123-cdn-static.com/uploads/4443598/normal_600026a167470.pdf
    • https://cdn-cms.f-static.net/uploads/4412996/normal_6042cf9a88877.pdf
    • http://mir23.xyz/bluetooth_windows_xp_32_bitk0a67.pdf
    • http://alsamcctv.com/icivics_government_and_the_economy_worksheet_answersagq32.pdf
    • https://static.s123-cdn-static.com/uploads/4365635/normal_5fc6dfa48b4a2.pdf
    • https://static.s123-cdn-static.com/uploads/4375702/normal_5ffc6b1edc649.pdf
    • http://musc-media.xyz/47402179243l77qn.pdf
    • https://cdn-cms.f-static.net/uploads/4481072/normal_6049df1a26c21.pdf
    • https://cdn-cms.f-static.net/uploads/4476938/normal_602efda745063.pdf
    • https://cdn-cms.f-static.net/uploads/4446925/normal_6035affbe87d5.pdf
    • http://zuwaweno.iblogger.org/5377265506.pdf
    • https://cdn-cms.f-static.net/uploads/4379043/normal_605a657bef1c0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://zexeborora.rf.gd/drama_romantic_is_a_bonus_book.pdf
    • https://uploads.strikinglycdn.com/files/92174e9e-0ac0-49e6-8f06-a065a894af24/oxford_igcse_physics_workbook_answers.pdf
    • https://uploads.strikinglycdn.com/files/715e985c-6f19-44aa-8fd6-a516cc655797/happy_endings_sleepover_movie_rotten_tomatoes.pdf
    • https://uploads.strikinglycdn.com/files/6e11c430-93dc-4a7d-ab46-5d6e0ceb0e57/words_that_start_with_long_o_for_kindergarten.pdf
    • https://uploads.strikinglycdn.com/files/77a08f86-09eb-482d-afc0-e030e6277294/32252034473.pdf
    • http://zopaxavebalopa.epizy.com/how_to_set_up_panasonic_phone.pdf
    • https://uploads.strikinglycdn.com/files/aac9baea-da50-4255-8ee3-0c5d682fcebd/labadejodoramiwukule.pdf
    • https://uploads.strikinglycdn.com/files/07e0f9a6-b180-4a22-af60-8397eb238e9b/75585375848.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_off0000e9ff.bin
21df8b8ecbd024c3631b8cae2e2ea44e5d5e5773d3d6851bc6d136547bf9fbb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FF 5180 bytes
font_01_sfnt_off0000fbc5.bin
266c0338e80eb90ee50142c3e8146ec5a85f07b2a3a54b48f71159e67bd8ee8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC5 21236 bytes
font_02_sfnt_off00012d82.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D82 4324 bytes

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