Malicious PDF — malware analysis report

Static analysis result for SHA-256 eebaf85695c326b3…

MALICIOUS

PDF

88.4 KB Created: 2021-03-24 17:06:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: db09d78334e096541a0aed74c107940c SHA-1: 2b9069c9805d5c55092061a78e04be333279cfb4 SHA-256: eebaf85695c326b38afb68bac1632ea542cd4eb6245e7b92f75e8e4b4b870a88
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it is a phishing or trojan delivery mechanism. The document contains a large number of external links, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. The embedded URL and the document body's reference to "executioner meaning in malayalam" likely serve as lures to encourage clicks on these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://kuzutuzo.ru/aws?utm_term=executioner+meaning+in+malayalam PDF link annotation
    • http://rabejagoruwobol.66ghz.com/77567649533.pdfIn PDF document text
    • https://cdn.sqhk.co/gixenerusivu/Jaidfc9/54064043816.pdfIn PDF document text
    • http://dazinifuxevoji.22web.org/nutijepitaxarexupogo.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/5IjeMgc/spy_king_bullet_puzzles_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/qCyRcJP/fdic_call_report_glossary.pdfIn PDF document text
    • http://nufogikije.22web.org/gefurozuzazigowetazu.pdfIn PDF document text
    • https://cdn.sqhk.co/nixagigad/cmibChd/life_coach_certification_classes_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/makubeku/thhgcLx/good_prop_hunt_maps_for_fortnite_creative.pdfIn PDF document text
    • https://cdn.sqhk.co/nazujovo/Rbhhdib/cancer_de_tiroides_diagnostico_y_tratamiento.pdfIn PDF document text
    • https://cdn.sqhk.co/wujugojuse/uhdRggo/40009018265.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • https://19a4122d-28db-4ec2-a9e3-8c1e87f24dd5.filesusr.com/ugd/70d0b7_fef230dec85743bb9ed839772c89b2ba.pdf?index=trueIn PDF document text
    • https://98e80eac-0673-4bf9-a3de-4132461903b3.filesusr.com/ugd/1acd69_bf075360b95c4e85b3b1120d247fa3f7.pdf?index=trueIn PDF document text
    • https://507d1b22-ea03-4061-a262-f79425337ca2.filesusr.com/ugd/a374b9_978e88b2e5d24823bd1d7fd949fb191e.pdf?index=trueIn PDF document text
    • https://3b0fe5ff-7f86-489c-8138-fc984e51136c.filesusr.com/ugd/bfd78a_32e079a85ac84cd4bc65cacaa4a8c589.pdf?index=trueIn PDF document text
    • https://eeeff038-21f9-42a6-bde0-cd945221d618.filesusr.com/ugd/9dc459_648dd2acb8c04346a614f39127af972b.pdf?index=trueIn PDF document text
    • https://f9fc249e-2e6a-4908-9eb0-88005465a50d.filesusr.com/ugd/2530ee_3e25e7dea7dd45ce859c5beed714eaf6.pdf?index=trueIn PDF document text
    • https://d872ce2a-2baf-4032-ab86-ab75b2f66d52.filesusr.com/ugd/338562_2b990525401c4bf4bd11e818cd4ce833.pdf?index=trueIn PDF document text
    • http://tenapaja.rf.gd/tisalovinabajo.pdfIn PDF document text
    • https://7ef5d8b8-74ac-4e0a-b0a0-fa61ca6462a8.filesusr.com/ugd/23e9be_099e3ea21bfc44dc9768ef8765fb118a.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
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B5 5068 bytes
SHA-256: 38ef753012852c593c7ba5a6c3e179a5cd9b8af5354866740261d5bb3387fbcb
font_01_sfnt_off0000e6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E5 15132 bytes
SHA-256: 921a5ed05a39e954cb8eb3702380020c371c07c3ffd2bcd0a08338a3620573cc
font_02_sfnt_off00011654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11654 11380 bytes
SHA-256: 076b2816fda0e24c3224606b73690c8ea3455ac8a34ca019c19561fb83a4d484
font_03_sfnt_off00013cf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CF8 16096 bytes
SHA-256: 292b67320f20e7e38814323bff47001ccb55b5eebb397aea8a254f3e91f57b87

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