Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e9ea6c787cee3cb…

MALICIOUS

PDF

83.5 KB Created: 2021-05-17 08:46:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 8187091be69ffc74139b77ef53e95e7a SHA-1: 4195e81fb05070731f5ded8dd9f835e4d6ff56b8 SHA-256: 4e9ea6c787cee3cb94f21ceb0cc84eb8becee508749cb445248e3f22f97a0368
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that leads to a domain associated with phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to a technical guide, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://ponafet.ru/strik?utm_term=apc+smart+ups+1500+battery+replacement+guide PDF link annotation
    • http://xanuxitawunavi.iblogger.org/introduction_to_psychology_test_bank.pdfIn PDF document text
    • http://feremujidonigu.getenjoyment.net/fupezoziroxutududede.pdfIn PDF document text
    • http://xoxuvajes.mywebcommunity.org/10509670253.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/aiag_spc_2nd_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/59194798493.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/adobe_acrobat_pro_11_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/15660634118.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/ficha_tecnica_avanza_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cb97da7-6014-4257-a933-1d37843f141a/20354086262.pdfIn PDF document text
    • http://fepaxediv.rf.gd/mrityunjay_kadambari_free_download.pdfIn PDF document text
    • http://seniduvako.epizy.com/12382885523.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2067e0cc-81fb-4772-8f36-f7191170f837/kebutukeme.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/goalie_stick_sizing_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9ba6e03-7d14-4acf-b2d8-47b8642ce9f1/79733630313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12bf075b-f293-404f-a113-948ac8dddc7a/the_essential_keto_cookbook_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/83676145641.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/40690388586.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/118d0dd6-0022-4703-9532-b6242cb6dc60/luzopu.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/adjustment_disorder_treatment_guidelines.pdfIn PDF document text
    • http://tufuripisaren.epizy.com/4885646185.pdfIn PDF document text
    • http://burufag.epizy.com/kakox.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/capital_structure_and_firm_performance_in_nigeria.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_off0001092d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1092D 5944 bytes
SHA-256: ab1fbd14a09a0b133df75be820946b0a21a929cebdf437487e2f03421442d241
font_01_sfnt_off00011d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D57 10128 bytes
SHA-256: 145811644c3a4a0891e7e0732101aeacafe8489edbfeeeef8a8cab50a7392f6d

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