Malicious PDF — malware analysis report

Static analysis result for SHA-256 60844690cd1f3d3b…

MALICIOUS

PDF

113.7 KB Created: 2021-04-09 17:24:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 95b39132dc369ee640a916c32eeb217b SHA-1: 2bc052636ff96d3c85ed00128f47e18ba4eb569e SHA-256: 60844690cd1f3d3b6f6f0a5587db908fcee6457d82a7ecfd8458a14dec17ceba
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a high-confidence ML classifier and ClamAV detection indicating malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the PDF is designed to host numerous links, likely to redirect users to malicious sites. The presence of external URIs and the nature of the heuristics point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9766

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://zajinet.ru/strik?utm_term=vicks+vaporizer+isn%2527t+working PDF link annotation
    • https://cdn.sqhk.co/gavezexu/jggxgdV/10578357990.pdfIn PDF document text
    • http://reduslim-shopufficiale.site/caracteristicas_de_las_neoplasias_benignas_y_malignask0tlf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530151/normal_5ff463a3f299d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472506/normal_5fdb36149cf1e.pdfIn PDF document text
    • https://cdn.sqhk.co/movijomo/ajaD9ZM/74213123300.pdfIn PDF document text
    • http://marketes.pro/sisufexelw90ro.pdfIn PDF document text
    • http://tortomsk.ru/the_witcher_boxed_settb70k.pdfIn PDF document text
    • http://profyhouse.ru/67714573586vpvja.pdfIn PDF document text
    • http://moneyindia.site/lijirumowosegupasujortx8k2.pdfIn PDF document text
    • https://cdn.sqhk.co/xitilesuxiw/NM0iehg/cute_gacha_life_characters_ideas.pdfIn PDF document text
    • https://cdn.sqhk.co/wawabosamugo/ih5idUR/adventureland_inn_in_des_moines_iowa.pdfIn PDF document text
    • http://net-klientov.ru/how_to_read_candlestick_patterns5jdac.pdfIn PDF document text
    • http://ses-sanobrabotka.ru/chale_aana_song_mp4vjla3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_604772450e5f5.pdfIn PDF document text
    • https://cdn.sqhk.co/kufomopinu/Zbyy1jb/zisojifivupav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485014/normal_5fcd2711a5794.pdfIn PDF document text
    • http://sayseedokg.com/dell_wired_keyboard_kb216_datasheetgro7w.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://bluebadgeform.com/care_credit_application_spanishmqnkh.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://50b44c92-959e-4a15-bf83-93d6b2b518d6.filesusr.com/ugd/3ed44c_783ce7f004354878af0c4a437e31e523.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zidenigad/social_learning_theories_help_us_understand_that.pdfIn PDF document text
    • https://92fed17e-af34-466b-b3fe-38cd9ef27699.filesusr.com/ugd/192d58_4ef5a1d2faca460190dac70e4a86fe7e.pdf?index=trueIn PDF document text
    • https://5e6d3f51-9b35-4a29-baf4-1f036254a461.filesusr.com/ugd/99a8f2_5b5971061c0942b1b13a6524d0872b28.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/what_are_cognitive_theories_of_personality.pdfIn PDF document text
    • https://e53c8fcc-339b-4d8f-83f6-44ddc8c6ace4.filesusr.com/ugd/1ea9c4_61b3d994929442868fc61b5e9f0f155c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mevuzokekenojab/armitron_pro_sport_watch_wr_165_ft_manual.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14613 2992 bytes
SHA-256: b4b5adab24c7b6c7df84b438c174531cbad6ee766a66dc56afeb3469cf3fa99b
font_01_sfnt_off000150b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150B8 5120 bytes
SHA-256: d105ea0182a9b803c4689aa0d6f23b350927bc0b3e583ed3f4a4f02aa2e93918
font_02_sfnt_off0001624c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1624C 1796 bytes
SHA-256: 765b2ad1a38a94440f74f65db6bc516ebacd89c06915b0b5e704c447b4de4636
font_03_sfnt_off00016b3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B3E 12132 bytes
SHA-256: 325c162de3c572b5bf70c06df640b84a07f5946b2aaa1e931a8d61144308c439
font_04_sfnt_off000193cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x193CF 16196 bytes
SHA-256: c0351e9a661e93b5b024187f5f22a3d8eef113da5d9b40302cc3ebd73b325851
font_05_sfnt_off0001a911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A911 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.