Malicious PDF — malware analysis report

Static analysis result for SHA-256 1542f6ec2432b8ad…

MALICIOUS

PDF

78.4 KB Created: 2021-02-28 05:33:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 5622e72c97d72b6a3dab2eac6baeb104 SHA-1: 541b75756b21f8c143dfdeaa24b14f515d3c05ee SHA-256: 1542f6ec2432b8ad407fc8f88769d42db9d4fbbff75eb4415afceba402d6ee4b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating the presence of external URIs and embedded URLs. The document body, though partially corrupted, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDFs from web content. The primary malicious activity appears to be directing users to the URL `https://baarspo.ru/123?utm_term=british+and+american+english+funny`, likely for phishing or to download further malicious content.

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
  • 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://baarspo.ru/123?utm_term=british+and+american+english+funny PDF link annotation
    • https://cdn.sqhk.co/turomixo/XPgigf8/sowuwuguguxoropixudiki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405409/normal_600939789675d.pdfIn PDF document text
    • https://cdn.sqhk.co/kizofapekeku/qv4ahjt/bigo_live_tv_recharge.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/hciegg7/35258830830.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxazigozo/VhjChgc/n._o._v._a_legacy_2d_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475197/normal_6006e2769668b.pdfIn PDF document text
    • http://xafesuvorolivig.scienceontheweb.net/29969724797.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481699/normal_5fe268f2c2215.pdfIn PDF document text
    • https://cdn.sqhk.co/fobonelaga/bhaichh/girl_superhero_coloring_pages_to_print.pdfIn PDF document text
    • http://odemebayisitrafik.com/65252340489ee3qm.pdfIn PDF document text
    • https://cdn.sqhk.co/fupokonabat/jeR95he/guess_the_word_app_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/ggKRibn/17357610946.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zupitatip.atwebpages.com/gawazuzodowetuzixutasulod.pdfIn PDF document text
    • http://zesafemumibow.myartsonline.com/96878665451.pdfIn PDF document text
    • http://zogadawedalifap.onlinewebshop.net/line_6_pod_2.0_battery_replacement.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_off0000f46b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF46B 5584 bytes
SHA-256: 892fbc40ad11030fb97c292fafb90b92f0d7ff2d3bcaa3cc7b03a60f344d3e24
font_01_sfnt_off0001074a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1074A 11000 bytes
SHA-256: d7efa1535a964c8dc3c2b2f3c5f057192e786ac361acc215a5b977cb1fb99d68

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