Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae1912f312190dd3…

MALICIOUS

PDF

81.3 KB Created: 2021-03-09 22:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 97218c34c97f7b109fc0c74d2e19632b SHA-1: 0ad441cad7ba5bb571b50658b11082705dad4936 SHA-256: ae1912f312190dd3b6fc8a7ba6e4eff20349ab0321d828a1b5cc1c8334ddbf52
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a domain associated with malicious activity, likely to deliver a second-stage payload or phish for credentials. The document body, though heavily obfuscated, appears to be a lure related to a product review.

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
  • 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://dafemum.ru/strik?utm_term=acurite+indoor+outdoor+thermometer+wireless PDF link annotation
    • https://burufazifefep.weebly.com/uploads/1/3/4/5/134584298/xugonifikupor_lupelorezu_zuzikab.pdfIn PDF document text
    • http://punaweb.iblogger.org/best_tarot_spreads.pdfIn PDF document text
    • http://ing-cliente.com/ravugidoboopppe.pdfIn PDF document text
    • http://arm-watch3.club/cashflow_ngcobo_book_free_download484zj.pdfIn PDF document text
    • http://repaircreditscore.info/kamisononiburimivulatopaftpo60.pdfIn PDF document text
    • http://prodson.space/call_me_by_your_name_full_movie_online_watchvmvzx.pdfIn PDF document text
    • http://voicebftyi.com/360966282856zqif.pdfIn PDF document text
    • http://trixy-matrix.space/jojamunu7aa6.pdfIn PDF document text
    • https://gepemizuwawufak.weebly.com/uploads/1/3/4/3/134335313/miremuvidaxajag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://eb62986f-0112-409a-9ebe-777412bc5c19.filesusr.com/ugd/26938b_a50578c5b74344c78367876d25ed1901.pdf?index=trueIn PDF document text
    • http://xazomagojuwa.epizy.com/gujamopemonovokuwuj.pdfIn PDF document text
    • https://543e2b4d-9699-46d2-9656-875e860b8e63.filesusr.com/ugd/fb32d0_3d9650c507964ff78a3cbd54ddc39015.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/kitchenaid_artisan_5_qt_mixer_review.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/ripavulavexukikofipokesin.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/transformers_autobot_stronghold.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/40909980658.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/quorum_report_austin_tx.pdfIn PDF document text
    • https://5902ff30-e651-486c-ac37-3e8383bfa78f.filesusr.com/ugd/f35da0_0679b4cb61f949af8b0ecf8e663e10c5.pdf?index=trueIn PDF document text
    • http://pabudixobo.epizy.com/979672788.pdfIn PDF document text
    • https://cb47f074-0476-4434-b381-5672a365cab8.filesusr.com/ugd/c46c8a_71a73de444044cc09fdacd3ba53e8e29.pdf?index=trueIn 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_off000100ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100CE 5052 bytes
SHA-256: 268b02b93b24092d43c0931767138f9e6a4e0fae97f5f481e885553483ecf71c
font_01_sfnt_off000111e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111E1 11124 bytes
SHA-256: 3e899b45a6b8237f5e760dadc24ccadbf32e53e4d3bc1a92bacd948015c9082a

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