Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7982a2b416f323e…

MALICIOUS

PDF

72.5 KB Created: 2020-12-11 02:42:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 82e16f27b16404e43840315ed3b997d1 SHA-1: 1956a5009af3a81f531a2b26c971f3de4956b683 SHA-256: e7982a2b416f323efd6d2afb109bf626733e37c2d10d7b1c52a809dd78647cdf
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=google+map+source+code+in+android+studio'. This indicates the document's primary purpose is to lure the user to this malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for a phishing or malware distribution attack pattern.

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
  • 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://gettraff.ru/aws?utm_term=google+map+source+code+in+android+studio In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369763/normal_5fad44194b958.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486346/normal_5fcbe285c305e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe239f5147b14804fc1314/1606296480217/proform_crosswalk_480_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3b544e98326c02db7f25/1606302548141/28005227082.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc107c868612547ed5eda4d/t/5fc21c543f75b166431c1d89/1606556757050/65645755212.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5662f0b6b03258f5376ce/t/5fd0965eb8bf0379e60e216d/1607505508186/real_madrid_football_games_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/chinese_mystery_snail_facts.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4992cb3e0f577145965b/1606371732902/how_to_cook_quail_eggs_sunny_side_up.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6be40e9133927d90a2b20/t/5fc9722a6c318e3cdc5930f1/1607037483810/zombie_hive_mod_apk_2018.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e1846b97992eb55bfc03/t/5fc1061c173fb5383bc63cc1/1606485541703/zuwonugemugixinan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05ac6910-326a-443d-8f1b-457da3bf6e0a/words_that_begin_with_proto.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfe871af5bf52c3278f72/1606221448784/72179888041.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28070f82-701d-46cb-9b28-0352155d0fb0/tisupa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2f26416f6d44b07cc07a9/t/5fc77092788a962b7c2fcfe7/1606906004630/panera_margherita_flatbread_nutrition.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0c59e18c5c478ec3096f/1606290523855/xevozowe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc66592affbf90a66102224/t/5fc87fd4094cf7617dc2a084/1606975444946/dakizikovago.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_off0000dfb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB3 5424 bytes
SHA-256: 79da018e001afcc2dd1fd2d8bd21d1e5387bba4f581e2848007b6d275df426c9
font_01_sfnt_off0000f20f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF20F 10032 bytes
SHA-256: 14da10c3804cd67208eb0f05828d19e2f4a64fd719875aab52de56e547358af0

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