Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6da1e0fa643d3d2…

MALICIOUS

PDF

74.2 KB Created: 2021-03-21 03:35:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: fa5e841a90a512f9e07c09c59ed2e822 SHA-1: a0f3f1576cc4093b1c77a2f76e660a32f02630bb SHA-256: e6da1e0fa643d3d256af5bf48c51db797e8f185d10ad586fd9a9af3758343890
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan-like behavior. It contains a mass of external links, with one prominent URL being `https://ponafet.ru/strik?utm_term=does+ps5+controller+work+on+pc`, suggesting a lure to a malicious site. The document body, though heavily obfuscated, appears to be a poorly rendered attempt to mimic search results, likely to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/strik?utm_term=does+ps5+controller+work+on+pc PDF link annotation
    • https://jumufewaxijakuk.weebly.com/uploads/1/3/1/3/131380308/duxirunixilebup.pdfIn PDF document text
    • https://penonogam.weebly.com/uploads/1/3/4/0/134012545/2839303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427105/normal_5fe6daa127489.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469106/normal_60527e07be6da.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4158c465-0173-4d4d-a14e-781c9afb8572/xugeje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bde6e5d3-c202-4ea0-ab24-ea0af91df8c8/pezunekowipisuwebobepu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c67b886-193d-47d0-a205-80c1204258f6/99917672805.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/132d660d-0372-45ce-bf51-65b57b182a68/90779289083.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea89a4b6-d662-40a1-a7dd-a3e44f6cea9b/59290473059.pdfIn PDF document text
    • https://77ac2d45-d533-4b4b-a85c-01e81860bff9.filesusr.com/ugd/7f1ad7_760421be0b1a46e1a953bf5ed8e51fe6.pdf?index=trueIn PDF document text
    • https://a3cd4400-5fdc-4e6a-bda8-88556a2d4d1f.filesusr.com/ugd/2f7489_b5f9eda47b1547379f40b3d31e4007d3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4096e82e-aea2-4ac6-844b-b3b744011de3/fios_router_connection_not_private.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ba0b2ea-89eb-4ca8-8a86-8f28b32d5f5f/ezdrummer_2_metallica_sound.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09d84455-8882-451f-bfb6-3d65fa0a09f4/los_juegos_del_hambre_sinsajo_parte_1_online_cuevana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afe3b05c-fa40-44fd-8f01-a8c8d9a3547a/fundamental_theorem_of_calculus_part_1_calculator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b27844d3-eaf0-4e2c-8f6a-f39645799d46/xixukodavipegov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22effbeb-3110-49ed-823a-b7ae87d8b015/bajaxaxugesizabamebed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceec5cd6-28b4-4dfc-92d3-6b8ee619e784/pubasakazulawazivavad.pdfIn PDF document text
    • https://5d3a3edc-1384-4eb0-a354-174dd54c13aa.filesusr.com/ugd/7f5dc5_eba1a9aaa56e47a9b0ac55289ca3aac2.pdf?index=trueIn 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_off0000e5c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C4 4996 bytes
SHA-256: 01a6e13b1b226b59053df9f4a7a80e146c61fe37f294340d3e678e1fac2d026a
font_01_sfnt_off0000f6fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FC 10324 bytes
SHA-256: d566157ab32ea685248fb72e5c837615ae739c5b4d6d4a8f7d945a4ab09dc41a

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