Malicious PDF — malware analysis report

Static analysis result for SHA-256 c76187402ebeb659…

MALICIOUS

PDF

78.0 KB Created: 2021-03-16 00:59:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69dac6450b072722050ded665a944be0 SHA-1: dfabb2efb3c0882ac3e4894df2cce1c947900be5 SHA-256: c76187402ebeb6591716fdcb8272efe8cff64a8cc98e58d707ea44c4113032cb
156 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, many of which point to potentially malicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external URIs are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/123?utm_term=kpi+template+free
    • http://italiabeach.space/828932583932f4az.pdf
    • http://lnstagram-help-businesss.com/covalent_compounds_naming_worksheeteuix2.pdf
    • https://cdn.sqhk.co/vizoxaxijojo/djeogd8/chocolate_pudding_recipe_easy_and_quick.pdf
    • http://kosonetibekub.medianewsonline.com/webokipuwubaxekevimi.pdf
    • http://boforobevuziko.mywebcommunity.org/29603754809.pdf
    • https://sedaduvu.weebly.com/uploads/1/3/4/5/134598683/zujenanuvitamun.pdf
    • https://cdn.sqhk.co/janezewufaj/hitig5l/world_at_war_ww2_strategy_mmo_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4408187/normal_602570bae2c61.pdf
    • http://bizifemodefi.mygamesonline.org/what_does_grantee_mean_in_japanese.pdf
    • https://zogujajuzeve.weebly.com/uploads/1/3/5/3/135392671/duvofugopala.pdf
    • https://cdn.sqhk.co/pasivuzuke/g0CMFzN/ninja_dash_run_2020_mod_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4467561/normal_604a416444c51.pdf
    • https://cdn-cms.f-static.net/uploads/4421641/normal_5fd0ec1f03cca.pdf
    • http://favarivizuna.medianewsonline.com/vasupomer.pdf
    • https://cdn-cms.f-static.net/uploads/4476010/normal_6043730a4acbf.pdf
    • http://persequenteamsohbet.com/what_is_listening_in_counselling30dnd.pdf
    • https://xabonawof.weebly.com/uploads/1/3/5/9/135965837/bibox.pdf
    • https://cdn.sqhk.co/nibubovixif/hcZgjid/kansas_demolition_derby_schedule_2019.pdf
    • http://belldiscount.ru/suwasufuxo0lwss.pdf
    • https://cdn.sqhk.co/xuxibila/13jhJie/56147945988.pdf
    • https://mebedepubini.weebly.com/uploads/1/3/0/8/130813558/xapijev_rasubuvifo.pdf
    • https://togoxijagujeg.weebly.com/uploads/1/3/0/7/130775712/9a0c9d11d.pdf
    • http://meetly.space/excel_increment_sheet_numberj4isc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://75e6d08a-b14f-4c2c-bd4e-3e6431d9d11c.filesusr.com/ugd/497a87_6f0113a3eec8476fa7f54881bb601fc0.pdf?index=true
    • https://204833c8-abda-4421-8777-5048ee7dd919.filesusr.com/ugd/e30b7a_e69984f2520f405683b2ffdfa9eeb573.pdf?index=true
    • https://51da6a7d-ee05-4a49-87ee-1b74af3aeb07.filesusr.com/ugd/b80405_96da310acf5443ab9a01a14f86fa0688.pdf?index=true
    • https://50b44c92-959e-4a15-bf83-93d6b2b518d6.filesusr.com/ugd/3ed44c_b62ab5a89947402cb17d7e16f0b6f247.pdf?index=true
    • http://nejesezape.myartsonline.com/rekanudi.pdf
    • https://1e16f6d7-285b-4488-bf07-d3e24ac90e20.filesusr.com/ugd/417718_1fee52d6cac249d5b4c52602ef73b63d.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f58d.bin
89b43b3fab2ac287405492da8a32bb03d89c609e199c4921bb6ebd80aa6bc1d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF58D 4840 bytes
font_01_sfnt_off000105f3.bin
cda96bbfcd114ac4f1cd0f491e882651960a980c4645fa542251ddcbb71c85d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105F3 10748 bytes

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