Malicious PDF — malware analysis report

Static analysis result for SHA-256 09bdf84f96149c7c…

MALICIOUS

PDF

71.1 KB Created: 2021-02-21 13:44:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 571d2e8381d3e2e5c17e84924842781c SHA-1: 87ce9ac98c8e9249053cbfa304cfa2bcf439ca35 SHA-256: 09bdf84f96149c7c8f8fd3be3328c5b60707d5371360302a9f3fadc6fa7135f3
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to lead users to phishing or malware sites. The document body, though heavily obfuscated, contains text related to search queries, suggesting a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://yafferge.ru/strik?utm_term=how+long+to+learn+procreate In PDF document text
    • https://poxemitiwafu.weebly.com/uploads/1/3/1/8/131871555/704a32233.pdfIn PDF document text
    • http://livecopyrightverification.com/23849620069g67dh.pdfIn PDF document text
    • http://usacarins.com/how_much_oil_does_a_2012_honda_civic_takeu2ruq.pdfIn PDF document text
    • https://poteluteko.weebly.com/uploads/1/3/1/1/131164474/dezomodifigofuvuxoxi.pdfIn PDF document text
    • http://autoupgrade.website/historical_follower_count_twitterxdxmx.pdfIn PDF document text
    • http://help-lnstagram-verifycopyrgiht.com/hackberry_rod_and_gun_fishing_guides3chg9.pdfIn PDF document text
    • https://cdn.sqhk.co/posebozej/ZT4Aiba/88661096152.pdfIn PDF document text
    • https://jamekefexufi.weebly.com/uploads/1/3/4/8/134866820/623f43f13934.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/xuzakob/labajuxuwevalivedaval.pdfIn PDF document text
    • http://rezumasalimod.epizy.com/47583275606.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/my_talking_tom_apk_mod.pdfIn PDF document text
    • http://mulozeraxepe.epizy.com/sodojorexosakigof.pdfIn PDF document text
    • http://bipofixijanafuf.rf.gd/internet_manager_6._35_crack_indir.pdfIn PDF document text
    • http://zagabukososikex.epizy.com/zugipalowenidet.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/free_printable_worksheets_for_kindergarten_alphabet.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/70131945614.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_off0000db56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB56 4976 bytes
SHA-256: 23cc45cadd10b9682e12fed53cfd6111ac8c3bb831a4c4a06d2b8973b8c20824
font_01_sfnt_off0000ec6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6A 10356 bytes
SHA-256: 3bb7d8c013a987798bda00102cf614626dc1511d21bea39d0a387722ab118907

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