Malicious PDF — malware analysis report

Static analysis result for SHA-256 0495f0f162407465…

MALICIOUS

PDF

73.7 KB Created: 2021-06-07 00:27:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a3d341a6382fc7f6183ec3982cfa7f7 SHA-1: 25a7f3c86f4e7747be71fd0ddf0d5323e4f038b5 SHA-256: 0495f0f1624074655282848c26bff1912c10c37c3acd32a93ef16a0d8d3c64d6
96 Risk Score

Malware Insights

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

The PDF file contains a URL that mimics a search engine result, likely intended to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://archism.ru/pbw?utm_term=how+long+to+cook+pork+loin+steaks+on+george+foreman+grill
    • https://static.s123-cdn-static.com/uploads/4428069/normal_5fdff6f158ec5.pdf
    • https://wunobenera.weebly.com/uploads/1/3/4/8/134887230/9651970a2b0e10f.pdf
    • https://cdn-cms.f-static.net/uploads/4371010/normal_602bfca50925e.pdf
    • https://nuguzawopaji.weebly.com/uploads/1/3/4/0/134040365/bijekod-monosenunamo-jotirirug-nogatipeba.pdf
    • https://faviretekomukuf.weebly.com/uploads/1/3/4/6/134606805/1140493.pdf
    • https://diwijavel.weebly.com/uploads/1/3/4/6/134691177/d85e0.pdf
    • https://static.s123-cdn-static.com/uploads/4481059/normal_5fc992a245bc6.pdf
    • https://cdn-cms.f-static.net/uploads/4452173/normal_605b60a995d0e.pdf
    • https://static.s123-cdn-static.com/uploads/4468563/normal_5fc7d2721b022.pdf
    • https://cdn-cms.f-static.net/uploads/4374852/normal_5fd664f6bb8ad.pdf
    • https://cdn-cms.f-static.net/uploads/4371787/normal_601bb0b4e73d8.pdf
    • https://tidepobowajaxuk.weebly.com/uploads/1/3/0/8/130814761/0953e67.pdf
    • https://cdn-cms.f-static.net/uploads/4401732/normal_600fa6a7b50e6.pdf
    • https://cdn-cms.f-static.net/uploads/4368469/normal_5fd2a604b635d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/40478bcf-81b2-4f6c-9d83-e087f17050c3/escribe_el_antnimo_de_estas_palabras_o_expresiones._agobiado.pdf
    • http://mifimoruzuwo.pbworks.com/w/file/fetch/144451521/poxupa.pdf
    • http://vulazojab.pbworks.com/f/borizezosekilirojog.pdf
    • https://uploads.strikinglycdn.com/files/7f22a69a-0c76-4bfd-86a8-5ef4ece3ae77/fifty_shades_of_grey_songs_mp3_download_320kbps_pagalworld.pdf
    • https://uploads.strikinglycdn.com/files/aa647630-03dc-4eda-b1f8-7e191bc22394/the_second_great_awakening_was_a_response_to_which_theological_persuasion.pdf
    • https://uploads.strikinglycdn.com/files/91e9d28a-d7de-4415-93d2-6f8324023a1c/how_to_hack_wpa2-psk_wifi_password_in_android_mobile.pdf
    • http://zuwofig.pbworks.com/w/file/fetch/144562923/48198918328.pdf
    • http://polubisoxuwo.pbworks.com/f/rurozowivu.pdf
    • http://nidibewuzi.pbworks.com/f/7422300485.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e27b.bin
e21f227cd9b67d4f07c17bc0774df3ab254436d7745b41e65140f50dbdaaaee9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE27B 5452 bytes
font_01_sfnt_off0000f514.bin
6e35c3d6e5b5a4371744827beefcfad4724f4cd4d3c2c8a84caec011bf1cbbda		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF514 10484 bytes

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