Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c2d8038cce9b3f6…

MALICIOUS

PDF

90.2 KB Created: 2021-05-07 20:02:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 63dc9011ec6a6d2f681eb4aa27ffbd0f SHA-1: 0a229c3eb7c2d16989c65200ab82c87eb883e0fe SHA-256: 8c2d8038cce9b3f6c1bb74260f9253dceb3b07aaec093c7e1eabeaacc12bab90
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are likely part of a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high likelihood of malicious intent, specifically to direct users to potentially harmful sites. The ML classifier and ClamAV detection further support the malicious classification, suggesting the document is a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jumiwimov.ru/strik?utm_term=is+850+a+bad+psat+score PDF link annotation
    • http://tigadugutuvatix.mygamesonline.org/hey_you_pink_floyd_guitar_tab.pdfIn PDF document text
    • http://roboludawu.mywebcommunity.org/71494230410.pdfIn PDF document text
    • http://gigezesuzobe.getenjoyment.net/53967916093.pdfIn PDF document text
    • http://sopisafexuj.sportsontheweb.net/12848588487.pdfIn PDF document text
    • http://bionatur.space/pazufifoxoxononelbj91.pdfIn PDF document text
    • http://vipimuxatomefi.medianewsonline.com/tizuwa.pdfIn PDF document text
    • http://nirenodeba.medianewsonline.com/infosys_verbal_ability_questions_with_answers_download.pdfIn PDF document text
    • http://xawamiwupajev.mygamesonline.org/lifonemutuxosixusatubavon.pdfIn PDF document text
    • http://dejepuzalew.mygamesonline.org/long_uncoiled_strands_of_dna.pdfIn PDF document text
    • http://visiblawty.com/92089524787zo2vt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lesidiwajenowil.myartsonline.com/lukanaxapilipapujepu.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/purple_cow_ice_cream_menu.pdfIn PDF document text
    • https://76df98a8-3e94-4eee-a6f5-23e1de06049b.filesusr.com/ugd/54c74c_662f7f9edb1d40cea446b82de3857124.pdf?index=trueIn PDF document text
    • https://0c2a7d7b-be9d-4ef2-a94c-09ca905cc17d.filesusr.com/ugd/7d21c0_d687491fed744578ba03806f608160a6.pdf?index=trueIn PDF document text
    • http://tepominofujemo.atwebpages.com/3673059446.pdfIn PDF document text
    • http://gujimosodaza.myartsonline.com/busch_gardens_tampa_park_map.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/79379603958.pdfIn PDF document text
    • https://8a89c5bc-485b-4808-980c-66c60e8d9908.filesusr.com/ugd/834936_beb0a5718bac47e4b9fc53120a8d1127.pdf?index=trueIn PDF document text
    • http://zijurape.atwebpages.com/paris_catacombs_map.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/34609911635.pdfIn PDF document text
    • http://tulajadulixo.myartsonline.com/delta_unisaw_serial_numbers.pdfIn PDF document text
    • https://121f8fc1-d270-4171-a721-8ccd656fc20f.filesusr.com/ugd/2ca22b_77f7b26ff3fe4a809569e17440638cbf.pdf?index=trueIn 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_off00010bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB4 5572 bytes
SHA-256: be8a80542d0fc016ddfa5511f75c6c3845716ac22f1b47bac58c544153c45884
font_01_sfnt_off00011eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EB3 11256 bytes
SHA-256: 9c275f55291f9482fb06a1830d6bf5c685c40bc1f94020a4a759f84fb9208559
font_02_sfnt_off0001453b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1453B 16036 bytes
SHA-256: 354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb

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