Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e358bb7497a614a…

MALICIOUS

PDF

96.7 KB Created: 2021-04-24 13:20:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 72e4c1e641424c73133d9b211bb0e245 SHA-1: 101545f8b9b54ddf698ce9c3ecee184f607f620c SHA-256: 1e358bb7497a614a0ee92b11f2497d39ee1ab544d4231c02461b6bcd53870dac
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-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://xezojetit.ru/strik?utm_term=allophones+of+the+same+phoneme+or+different+phonemes PDF link annotation
    • https://cdn.sqhk.co/fagaxirupunu/9pcNnid/basketball_legends_2019_unblocked_games_66.pdfIn PDF document text
    • http://jolijivik.scienceontheweb.net/distinguish_between_effectiveness_and_efficiency.pdfIn PDF document text
    • https://cdn.sqhk.co/wixumenez/8igLibJ/jakedubumatopuvefatawef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485813/normal_604e084a5cf77.pdfIn PDF document text
    • https://cdn.sqhk.co/jabisopomuxo/Kscsuhf/savolinorujibo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368218/normal_5fe1ecf3d8996.pdfIn PDF document text
    • http://fijazubelanulek.mywebcommunity.org/xepalupimujaso.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d39cf19d-b2ff-44f4-b46d-08c01d66bd58/jidafeberutenojemiji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ee37f7f-f949-4f86-975c-1fcd8865bf5e/77396880567.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/691c6f1e-92b8-4ea7-82c8-c47d610c1537/44033780531.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c1ebc4f-55ea-4003-a2c9-f1568b237399/41213279079.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29a7aace-4b02-4614-b835-417049ed7ac3/20103126315.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4abe9156-7adf-4f5b-ad1b-a8834e9a90e4/bonuxemeka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a2c7950-ab6d-451b-acce-cb444b71d204/what_age_are_the_rich_brothers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/501b1b27-570b-4b05-94be-b755e8dfbe40/58502201195.pdfIn PDF document text
    • http://pofijiserige.onlinewebshop.net/17913007996.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12708 5268 bytes
SHA-256: e6ffc435f3daf9ffe5edb7775548c7d4c311de1c4d5b871679c7ec5337efdba5
font_01_sfnt_off000138c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138C7 11368 bytes
SHA-256: e0ee107b37ceb8ecc224c3621f9d8a4426a265d24aa0f110bf35b0bbd49203ce
font_02_sfnt_off00015fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FC4 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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