Malicious PDF — malware analysis report

Static analysis result for SHA-256 06bb292b8223dbbc…

MALICIOUS

PDF

74.3 KB Created: 2021-02-24 17:03:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 65d52b0c6229be1266681b0c841d4cc2 SHA-1: b2dd9099749921f9d68110d69dacce43d38007c6 SHA-256: 06bb292b8223dbbc0c738ffdfff78e436ddc896fa57ae8c89b2b037befccba30
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and a machine learning classifier, indicating a high likelihood of malicious intent. It contains a large number of embedded links, with one pointing to known malicious redirector infrastructure. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic, potentially leading to phishing or malware distribution. No scripts were extracted, but the PDF structure itself facilitates the malicious linking.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=tiny+tower+hack+android In PDF document text
    • https://zuxolizaf.weebly.com/uploads/1/3/2/7/132740519/kupelipa.pdfIn PDF document text
    • https://cdn.sqhk.co/wujukipako/gcihjeD/champions_league_fixtures_2021_draw.pdfIn PDF document text
    • https://motoburibekisi.weebly.com/uploads/1/3/4/6/134623685/98019935d17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409818/normal_602bffc5ddba4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452852/normal_5fdfc57ba6291.pdfIn PDF document text
    • https://cdn.sqhk.co/remowiwa/S1UhgLv/wordscapes_level_8587.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4504839/normal_5ff3d32d05f1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369909/normal_60088dac612e6.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/vjfigzn/62000096790.pdfIn PDF document text
    • https://lupawepenotude.weebly.com/uploads/1/3/1/6/131606523/db85a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365525/normal_60074488f1ba2.pdfIn PDF document text
    • https://cdn.sqhk.co/konidadelan/7rvjhhb/sushi_neko_las_vegas_50_off.pdfIn PDF document text
    • https://cdn.sqhk.co/xaranoraf/ajcjgB0/63630849453.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376379/normal_60053bfcca0cb.pdfIn PDF document text
    • https://cdn.sqhk.co/tamenotu/9gik1hc/owensboro_messenger_inquirer_court_records.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465559/normal_5fd78d369aae4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446937/normal_5fff10d4d9ff8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420905/normal_60296bf70fe6e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497359/normal_5ffe506d8c1cf.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/dhijeji/fashion_city_2_mod_apk_revdl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE627 5024 bytes
SHA-256: e8d11a823a6a19785a48c5801e90db71a491729363f5d49b2b96eaaff73e379b
font_01_sfnt_off0000f74d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF74D 10872 bytes
SHA-256: 7545fe46c138f56869fb43bb0180c6f82551e025e7669b3bb6ac97757b3bb121

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