Malicious PDF — malware analysis report

Static analysis result for SHA-256 95e3b617c47a9e30…

MALICIOUS

PDF

79.0 KB Created: 2021-03-30 15:36:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa492a9320b8cdf34205b49a82e1d94a SHA-1: 918aa081e4d386e4120ac9128226163697ed3f5c SHA-256: 95e3b617c47a9e30c5fad4e3b1300a9d36e27ae110d6ad230f435ecc75ba6997
156 Risk Score

Malware Insights

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

The PDF contains a link farm and a lure related to 'Euro Truck Simulator 2 activation code keygen', indicating a phishing or scam attempt. The PDF_SEO_LINK_FARM heuristic suggests a large number of external links were generated, likely for SEO manipulation or to host malicious content. ClamAV detection and ML classification confirm the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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.
  • 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://seumenha.ru/strik?utm_term=euro+truck+simulator+2+activation+code+keygen
    • https://fukagopesuzidad.weebly.com/uploads/1/3/1/3/131381553/bimikanudojepodini.pdf
    • https://rodefakuwutepez.weebly.com/uploads/1/3/4/3/134341390/sikoxalamiwuvokedapo.pdf
    • https://bujajegufo.weebly.com/uploads/1/3/4/1/134108800/243e7006f0f49dd.pdf
    • https://jiwebatije.weebly.com/uploads/1/3/3/9/133997557/8c61a2ba9bde7.pdf
    • http://manipiso.iblogger.org/vujekow.pdf
    • http://vuxiparami.22web.org/why_did_my_maytag_dryer_stop_working.pdf
    • https://dipalowijoje.weebly.com/uploads/1/3/0/9/130969855/fosegaduvulisuronar.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5e8d8068-73d3-4ff8-93c9-0e37e002b2d7/bhagavad_gita_in_tamil_quotes.pdf
    • https://uploads.strikinglycdn.com/files/39e2dce3-9f30-4958-b0c6-fb632e0ebca6/is_the_movie_glass_part_of_a_series.pdf
    • http://vemewef.rf.gd/fobevevafexixolamedakerap.pdf
    • https://8860adff-7f0b-4cf3-a358-cdd560dff136.filesusr.com/ugd/625844_a2aade485ddf438fa2bdaa6188021cec.pdf?index=true
    • https://171e2b11-24ea-4535-acac-f971ec821c4b.filesusr.com/ugd/a07927_ae1df976b6ef424594d3117e24be6c1e.pdf?index=true
    • https://e8b83640-91e4-44a0-a69f-c2468797902f.filesusr.com/ugd/ee4a13_12ae723a791649049ce5d0d6dca9b079.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c0d36127-d24b-4e71-bf63-da859d54f056/fesazuvugamu.pdf
    • https://2ea9429b-0332-4ee6-bb75-ab9535b56c99.filesusr.com/ugd/e2f7e1_eb9206bf55604ec5865fea1c2c1bc0f9.pdf?index=true
    • https://uploads.strikinglycdn.com/files/173ba583-1d9b-4140-b290-8e52ef10f938/duxajalonij.pdf
    • https://ae8c1479-5121-4009-b0ed-8259dbb1205b.filesusr.com/ugd/0aff45_a75a9bd6e05e4d16b030e536324d9ece.pdf?index=true
    • https://uploads.strikinglycdn.com/files/75dfba8f-f50a-47bc-b2e7-f96cc0236795/alcatel_pixi_4_tablet_specs.pdf
    • https://69669160-cc20-42a3-bfef-e1e1fd1f8163.filesusr.com/ugd/8094a4_9d5c2670e2d043968d7b2f2ee8db3b80.pdf?index=true
    • http://bajipodi.epizy.com/android_21_combos_ps4.pdf
    • https://8964868a-aef6-4da0-9a9b-29de7c28e0c5.filesusr.com/ugd/b910ae_0dd1828e9e874709be1b9101c028b6cd.pdf?index=true
    • https://uploads.strikinglycdn.com/files/03bc2380-9600-4987-86c4-5b536076bbb2/how_to_turn_on_holmes_heater.pdf
    • https://d4996ccb-aecf-47c4-aab6-3c4fe022e1b7.filesusr.com/ugd/b7ed05_c841e0b8472b4e1da655934dfcb52a7d.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f708.bin
1aed89554b670cd09741e1d2f48eedd90b709c8cc91f9807c4810ea22d53b86a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF708 5576 bytes
font_01_sfnt_off000109ff.bin
800fd00b17640eb87c04875630f7bb021b56516dc641f475a80cde04054c7198		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109FF 10648 bytes

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