Malicious PDF — malware analysis report

Static analysis result for SHA-256 c487faa3d317133c…

MALICIOUS

PDF

69.1 KB Created: 2021-02-26 20:17:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2e4f1f8c7b8dbd39e7641d9df16b7bdc SHA-1: a1a10ad4627712b2ae801182afaf2dc24c3056ac SHA-256: c487faa3d317133c955cd877908289d7f73cfd5e6582b014f0e140d57d6c526f
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/wix?keyword=webasto+diesel+heater+specs In PDF document text
    • http://fudoviwil.mywebcommunity.org/wordpress_redirect_to_login_page_after_login.pdfIn PDF document text
    • http://noxafenetut.iblogger.org/public_relations_degree_plan.pdfIn PDF document text
    • https://vugalemudapitos.weebly.com/uploads/1/3/1/1/131164275/zulogekijelibujaso.pdfIn PDF document text
    • https://dasaxurakusep.weebly.com/uploads/1/3/4/0/134017902/8975274.pdfIn PDF document text
    • https://sulunekuzesafap.weebly.com/uploads/1/3/1/4/131406846/7a0cbba5620.pdfIn PDF document text
    • http://zeboxagekej.sportsontheweb.net/how_do_i_use_my_instant_pot_duo_evo_plus.pdfIn PDF document text
    • https://zemutixo.weebly.com/uploads/1/3/4/8/134865820/lukukagivupezawobesa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://finubovuputok.epizy.com/36086406823.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/heretofore_crossword_puzzle_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/53119009587.pdfIn PDF document text
    • http://nebaxowowugi.rf.gd/champion_song_free_pagalworld.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_off0000d23c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD23C 5312 bytes
SHA-256: ead60513bbebd8825dad5b454c2c51d692e059190bcb1ac203190579aa176e46
font_01_sfnt_off0000e449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE449 10476 bytes
SHA-256: ca0a9055003e49a35c109b06d9931bce99925f564907bd566e42d8144cc3da31