Malicious PDF — malware analysis report

Static analysis result for SHA-256 060a7ce5ef770a2b…

MALICIOUS

PDF

96.7 KB Created: 2021-02-13 00:43:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d67c85617d1b5fd9209143edca4390e1 SHA-1: db7bd82729256a33a0642e5969bdbb274a9be0ff SHA-256: 060a7ce5ef770a2b864b24417df3eed371a4a342926fe30a14b21cff2dc1a91d
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically identified as a redirector to malicious infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent. The document's structure and embedded links suggest it's designed to lure users to external sites, likely for phishing or further malware delivery.

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
  • 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=120+farming+guide+rs3 In PDF document text
    • https://fizubuvi.weebly.com/uploads/1/3/5/3/135301632/sitakupukegorug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402938/normal_600d5161848eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451027/normal_5fdfa196f2a58.pdfIn PDF document text
    • https://vudaxevagi.weebly.com/uploads/1/3/4/2/134234865/polig-zufetuvonap-jugakedege.pdfIn PDF document text
    • http://reredikulole.22web.org/29860448737.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366625/normal_5fe15439bab70.pdfIn PDF document text
    • http://divuwon.iblogger.org/maari_2_rowdy_baby_song_dance_performance.pdfIn PDF document text
    • https://xatoxelal.weebly.com/uploads/1/3/1/4/131482937/2c02a4c8740.pdfIn PDF document text
    • http://paworupuwiwitew.iblogger.org/rushcliffe_borough_council_planning_application_forms.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dodarululi.epizy.com/xumajogaradiw.pdfIn PDF document text
    • http://tefinavi.epizy.com/guess_who_is_under_the_sheet.pdfIn PDF document text
    • http://napezidemilolez.epizy.com/bahubali_3_song_pagalworld.pdfIn PDF document text
    • http://wixuwozovezo.rf.gd/7673921057.pdfIn PDF document text
    • http://muxuzuvom.epizy.com/sovebuwibo.pdfIn PDF document text
    • http://tidegofavinugaw.epizy.com/java_core_api_docs.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_off00013498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13498 5592 bytes
SHA-256: ddef1ae2ec5dd9773f8d523b81e4989d4616c7a2b1106b3ea9bb1983d30856df
font_01_sfnt_off00014789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14789 14780 bytes
SHA-256: 173e3221ae1d5eeb23e2d602f515dc858411adf145dd12900ec297f3f72145bf

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