Malicious PDF — malware analysis report

Static analysis result for SHA-256 7787ed7543a25f15…

MALICIOUS

PDF

70.3 KB Created: 2020-12-17 03:42:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 4ccf4b155ea684ecfd08f9357531edc8 SHA-1: 969e51fb39ba616ae936e44288bf50495346e404 SHA-256: 7787ed7543a25f15686c747ece12c5daceaa08fcf0fa94d60dec7bf5f496f4c7
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://trafffi.ru/strik?utm_term=richardson+isd+dyslexia+jobs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f93244618f23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427506/normal_5f9916c99e4b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484363/normal_5fd0527a16ebb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413714/normal_5fd7c192057d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/76340036712.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/bifibukazudoviveg.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17a02e2fce462bc900607/t/5fcc53382bc7884852aa19c3/1607226169103/37394300139.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6844ad26ff1194f9aacb7/t/5fcc1d5dd235d37878b51a20/1607212381892/word_games_online_free_scrabble.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/group_935_emblem.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/u_wrench_it_omaha_price_list.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/kobubutitujesigag.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55016abaecd33183f7a42/t/5fcba14e36758319a556e6e8/1607180622241/gangster_wallpaper_girl.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/99538770733.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/human_aggression_and_violence.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC829 5128 bytes
SHA-256: 21ce43139995da549b176b8953a47ce761e35184ee020907c3c151102a8c8831
font_01_sfnt_off0000d98c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98C 10816 bytes
SHA-256: 9f79c28aa43dde4dd8bd6087ad6bff947d9b7139c516e931b937e7a6e4843d22
font_02_sfnt_off0000fe66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE66 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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