Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e709aac041d81b…

MALICIOUS

PDF

90.0 KB Created: 2021-05-07 08:16:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: d32c89bb5ef8c03357f6bf42e7bab640 SHA-1: b0dc70ff2ae892be51eb488080ba21dfb73ba80f SHA-256: 66e709aac041d81b3361f5b93ccdacaa42f19743f7040dd95100934ef646ca03
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating a link farm and an embedded URL, directing users to a suspicious domain. ClamAV also detected it as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, appears to be a lure related to personal information, likely intended to drive traffic to the malicious URL for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=driver+license+place+in+indianola+mississippi+phone+number PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6c8ac0f-3084-4e64-a867-4ecc794aa365/how_to_make_money_tiktok_creator_fund.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/002eb01f-c61f-4715-b539-9f16c72c002e/galafuxotogo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b463bb31-4a16-49af-8cc7-a18f8d06397d/lukezedawozezuguvagexuvoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a8a60be-ad5b-43c3-848a-209f5d194e43/planet_eclipse_etha_2_paintball_gun.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/chandi_da_challa_punjabi_song.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/texewe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37845905-f1c4-4f23-9115-c5d568939a78/which_treasures_have_been_found_from_the_book_the_secret.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d97565de-e5e9-4e57-b530-3344ae1087e9/what_is_a_garmin_traffic_cable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc41d366-d602-435d-b8d3-73b2f4a875f5/wix_static_ip_address.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4a61246-0207-40d2-993e-f273cb2b38f6/87829871836.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/71513470393.pdfIn PDF document text
    • https://6c892e0d-5736-4b4a-96a3-cd490fd1fe3d.filesusr.com/ugd/1407cd_189a96322968423bbb384cd9b7c257dd.pdf?index=trueIn PDF document text
    • https://dcd55a6f-f4d9-4ab7-9ea0-0dac4ffa5d6f.filesusr.com/ugd/f7cbe4_cef9a185274349ea9f7b92d6db40a3ea.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/812e4687-0d14-4c4a-b849-eb257608d57d/papuzupokikenaz.pdfIn PDF document text
    • https://6f847715-c85a-45d9-ae5c-7c68cc800588.filesusr.com/ugd/6e100b_4b3a829665254c96816dd62926815f8e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/64621004164.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cd47692-d568-4062-964d-1c0b2804fcde/kazoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eba2369-52d8-4c77-8cc5-4e4acd1df64a/explain_how_radiocarbon_dating_works.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/free_id_card_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/entamoeba_histolytica_treatment_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee0bb6c5-1ce0-4d7a-bad8-dc07bf9861ca/rakevufivajesaris.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011cb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CB2 5512 bytes
SHA-256: 6e58a6773c5d6c62040b81860ea9e3923117e34b42fd98c79cc9f2c866bacc30
font_01_sfnt_off00012f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F4B 12164 bytes
SHA-256: 16cd12d2948d0a547ffed4fa4c971186511aee6f34b968dec897e2e85029a3a1

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