Malicious PDF — malware analysis report

Static analysis result for SHA-256 2270f48bfadf57b9…

MALICIOUS

PDF

69.6 KB Created: 2021-01-23 07:07:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: a3594d7e9667b121d624e5167ede9432 SHA-1: 77dffa48554b5cc975aa408af8dbae851729e734 SHA-256: 2270f48bfadf57b9056de481651344f025bca9bc7e58ade258c4a09e923a4e49
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. While no scripts were explicitly extracted, the presence of malicious redirector links suggests an attempt to lure the user to a compromised site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://traffine.ru/aws?utm_term=baldrige+excellence+framework+pdf+free In PDF document text
    • https://didefitelov.weebly.com/uploads/1/3/0/8/130874246/9637589.pdfIn PDF document text
    • https://site-1172631.mozfiles.com/files/1172631/xamisetasu.pdfIn PDF document text
    • https://dorikorojuj.weebly.com/uploads/1/3/3/9/133987202/xupudon_jusepezowes_pogelufupodugam_fixazivijizexe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483388/normal_5fc895764c50a.pdfIn PDF document text
    • https://degetopej.weebly.com/uploads/1/3/4/7/134727915/pinizale.pdfIn PDF document text
    • https://site-1180109.mozfiles.com/files/1180109/android_emulator_for_low_end_pc_pubg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490364/normal_60014fdcbcacf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408352/normal_5fe33e8937b06.pdfIn PDF document text
    • https://site-1083679.mozfiles.com/files/1083679/fagixakegalilagosesif.pdfIn PDF document text
    • https://site-1253930.mozfiles.com/files/1253930/atrial_fibrillation_treatment_guidelines_uptodate.pdfIn PDF document text
    • https://site-1207104.mozfiles.com/files/1207104/mega_ramp_tony_hawk_pro_skater_1_2.pdfIn PDF document text
    • http://xowozumevabig.66ghz.com/arctic_monkeys_fluorescent_adolescent_drum_sheet_music.pdfIn PDF document text
    • https://site-1175421.mozfiles.com/files/1175421/free_battleship_games_for_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464319/normal_5fe04c5ae0d08.pdfIn PDF document text
    • https://tureduritisamo.weebly.com/uploads/1/3/4/6/134676104/99d0237e7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370088/normal_5fd787bbd97fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467287/normal_5fcf3d0980e04.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462980/normal_5fcb3020847bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485689/normal_5ff3c01eaa527.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://betupaxomivokab.epizy.com/25054505448.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_off0000d2a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A9 5572 bytes
SHA-256: 607ea262b88fda232d6133ea28930c62663d3fe74b16d9a50bd0f1883954f40d
font_01_sfnt_off0000e5ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AE 10388 bytes
SHA-256: e77e50bb7232caebf0c37c1fea3a8b79790facf720dc495581027daf95ee98c9

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