Malicious PDF — malware analysis report

Static analysis result for SHA-256 be0d360301b1cd40…

MALICIOUS

PDF

83.4 KB Created: 2021-03-13 18:44:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: de2dc9ed513da8861cf1251fdb0e7989 SHA-1: 5c111d5c6a053c3097ef43cef527186a32d5b4a1 SHA-256: be0d360301b1cd40eb7b2652e7bba94718f7697fd5730f3fee0f2563a90cc1ad
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with a primary suspicious URL pointing to a site offering information on 'elite max keto side effects', likely a lure for a phishing campaign. The PDF structure and embedded content suggest it's designed to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://druttle.ru/wix?keyword=elite+max+keto+side+effects PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473938/normal_602993cc38211.pdfIn PDF document text
    • http://8bitbeardsco.com/what_is_the_best_twin_stroller_with_car_seath9aqd.pdfIn PDF document text
    • http://podarokinsta24.online/486584544144d7v7.pdfIn PDF document text
    • http://wiinorama.space/jumpstart_1st_grade_serving_up_fractionsyfoxh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462093/normal_601eff73c9e05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402949/normal_5fe621f4b8bf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445558/normal_5fd1dbad6d5c2.pdfIn PDF document text
    • http://yogait.space/63050793351896yx.pdfIn PDF document text
    • http://pr-bux.online/xulilolgt86s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464732/normal_6014920b5b47a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404113/normal_5ff7b51e542ac.pdfIn PDF document text
    • http://kittyplay.online/82258757463o2pho.pdfIn PDF document text
    • http://fresh-ita.fun/6060338016lyx5a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/025f269c-e89b-4e1a-8605-436e99f18b15/wivuwanep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb103416-9fe9-4b36-8f90-edbb58348ba3/class_10_computer_chapter_1_introduction_to_internet.pdfIn PDF document text
    • https://05b56818-8b0b-4484-a411-4f1234233f1c.filesusr.com/ugd/e49726_264c325b39344fd89e9efc0027350e1d.pdf?index=trueIn PDF document text
    • https://368051e9-4199-40ea-b9a2-dc6e6f83cb3b.filesusr.com/ugd/6260fe_9793dd0e541c49edb4964dbd8ffb425e.pdf?index=trueIn PDF document text
    • https://368051e9-4199-40ea-b9a2-dc6e6f83cb3b.filesusr.com/ugd/6260fe_2b27f1dafbc343ecbce2a97ee0b6ee89.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4351b74-76f4-4634-aea9-408a65d6fcbf/wefavadobaxanogip.pdfIn PDF document text
    • https://17673d3b-e5d0-4e0e-8211-f079fadf35f5.filesusr.com/ugd/13ae68_9242889f920147e79482854637ecb1a0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/97493362-8dcb-4c23-b485-0da2223a03e3/lelagotelufuxejibuwili.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE2 4844 bytes
SHA-256: 200388e6798c17ef2c2d381d80ceb3821f131958a9ab44a86cbf2dea3e704807
font_01_sfnt_off00010d69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D69 10940 bytes
SHA-256: 691a75a3233f73761cda7b2aa173ebbadc71ec0d471f73f4740d9eda8ee34205
font_02_sfnt_off0001322a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1322A 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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