Malicious PDF — malware analysis report

Static analysis result for SHA-256 309f52be56d27039…

MALICIOUS

PDF

114.6 KB Created: 2021-03-24 20:01:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e77722a7c5841434e230fae741e93c2d SHA-1: 6569cd8a23d4e82c3886731756c46f33b6c83e7e SHA-256: 309f52be56d270393d272d51b229c5077f07000ddc0f846c48e82723c4ed6107
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://ponafet.ru/123?utm_term=afcc+child+custody+guidelines PDF link annotation
    • http://flathead.us/witup4yhi4.pdfIn PDF document text
    • http://bloomwithdeanna.com/4390227771002etv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377663/normal_5ffa2278812b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392667/normal_603ac1dcc31dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373008/normal_5fce49d6f2b43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383929/normal_5fc6a83b193e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450424/normal_5fcc5ae6e107f.pdfIn PDF document text
    • http://nurokojo.mypressonline.com/yaesu_ft-450d_qst_review.pdfIn PDF document text
    • http://welitizenowem.mywebcommunity.org/what_are_the_three_main_types_of_intermolecular_forces.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/pasutiz/guitar_tabs_hindi_songs_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/danitalid.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/97976012721.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/pumopisevidagigerajef.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/1418746247.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/cornelius_castoriadis_biografia.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/book_report_template_for_8th_graders.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001763e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1763E 4948 bytes
SHA-256: f29b5fbe49f533a9b68622a6075fa3ea25f4ac2d7796ee5816faefa446c6875d
font_01_sfnt_off00018714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18714 11788 bytes
SHA-256: 52a72b2c6f845c58c5cc7f7d6df9301acefc342c488d73984cf869a7877309cf
font_02_sfnt_off0001af20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AF20 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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