Malicious PDF — malware analysis report

Static analysis result for SHA-256 32b22bee22378da4…

MALICIOUS

PDF

72.5 KB Created: 2020-12-21 01:51:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 962b07cb095addbd8edecfc10d19f0b7 SHA-1: df4576c1639408388cd7e53d45e9c32f90aa8cd6 SHA-256: 32b22bee22378da430bf39e83a000566e44ff09a4f6fd642d55612faa111201e
154 Risk Score

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://traffine.ru/aws?utm_term=ahirani+song++3gp'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

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://traffine.ru/aws?utm_term=ahirani+song++3gp In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382966/normal_5f8ef968acf5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446283/normal_5fc0e94e3cbfe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375705/normal_5f8e673394e56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465392/normal_5fba8dbfaa8c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503033/normal_5fd90a4d92e3c.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/pamavon/delonghi_dedica_ec680_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/domain_driven_design_quickly_online.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/good_king_henry_herb.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/40503057060.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/bollywood_movies_mp4movies._com.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/the_greatness_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/8910015398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e16312c-20a4-424f-a668-2748479671d4/ap_us_history_historical_thinking_skills_poster.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000e8e8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE8E8 24448 bytes
SHA-256: 07cdf2de1d7ce635ae15c5ac107db494554dd168df298098861c6aea213bb7c1
font_00_sfnt_off0000b641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB641 5200 bytes
SHA-256: 1bbaff2e5a6d9e22626f1e16644b625d38db924c93569b405d0dcb0f1b5e30d3
font_01_sfnt_off0000c7f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F0 9656 bytes
SHA-256: 40c6f352df2339374bac66a9a7ded4822d3664bebedc1996ffcddec57edc24a6

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