Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3104e5cd8eb45de…

MALICIOUS

PDF

86.3 KB Created: 2021-04-08 04:55:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69a5dd60845d9b8e4e943adc634b3412 SHA-1: d3102344b772fb7310b2501bdde5a3636d8e1094 SHA-256: b3104e5cd8eb45de3b6efe0e5d6bb7718bfe68e3e73ba2e66ba80d1a3bb37da1
156 Risk Score

Malware Insights

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

The PDF file contains a lure related to a Casio watch, which is a common tactic for phishing or distributing malicious content. The presence of numerous external links, including one pointing to 'pelibifir.ru', suggests an attempt to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/strik?utm_term=casio+men%2527s+g-shock+dw9052v-1cr+sport+watch
    • https://cdn.sqhk.co/mofokamibe/Sge20vg/formula_1_racing_games_online.pdf
    • https://wadoruzog.weebly.com/uploads/1/3/1/3/131379034/8401445.pdf
    • https://vevikonupefafo.weebly.com/uploads/1/3/5/3/135391347/zetimifojuta-fejazujomoxilum-zuvodasepige-moguzazubujomag.pdf
    • https://wegenagozej.weebly.com/uploads/1/3/5/3/135394478/vobujoliji-sirejapodaf-rufawozov.pdf
    • https://cdn.sqhk.co/lutadamafe/jeSxjjg/94010705942.pdf
    • https://cdn.sqhk.co/mapuvokunoj/Uyphjhd/jilazaderawew.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/ganubifirigevi/buliwozufudivetafi.pdf
    • https://s3.amazonaws.com/boxalewijim/23820797286.pdf
    • https://uploads.strikinglycdn.com/files/73a69cb6-ca39-4da3-9c4b-041eb0526170/the_girl_who_owned_a_city_book_report.pdf
    • https://s3.amazonaws.com/dubiditiginowo/45152110082.pdf
    • https://s3.amazonaws.com/gajakelegeza/fidavadedapiw.pdf
    • https://s3.amazonaws.com/sejakopa/lyrics_something_just_like_this.pdf
    • https://4eff3ec4-d147-45d1-be73-876d9e1d0019.filesusr.com/ugd/efb3f0_ec8ff56547f347d58e22f678d7014231.pdf?index=true
    • https://c8070bf9-ed42-4c5d-8eb8-ca35ee70f136.filesusr.com/ugd/d38238_40f5028f52244b1b86dbd0cc837e1605.pdf?index=true
    • https://s3.amazonaws.com/fizup/annamayya_songs_telugu_lo_ing.pdf
    • https://uploads.strikinglycdn.com/files/bb71a347-e43e-46ea-bd64-2b909c7e8711/national_primary_and_secondary_drinking_water_regulations.pdf
    • https://s3.amazonaws.com/nasitevu/nilagomuk.pdf
    • https://uploads.strikinglycdn.com/files/fe1179ec-ffcf-4095-8f2c-722f5d63c141/calculo_volumen_integrales_dobles.pdf
    • https://uploads.strikinglycdn.com/files/82d73f0d-f77f-4f2f-9194-ec79cadc10cb/the_rabbits_who_caused_all_the_trouble_theme.pdf
    • https://uploads.strikinglycdn.com/files/9a66b0d3-6f26-4371-8279-de38774c16a5/dudonuponatijewide.pdf
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001010a.bin
d7b40f6279396d9a7397f9feca1f60fd7bd1ada365b3f4dfa14e0350f21cda24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1010A 6152 bytes
font_01_sfnt_off000115f9.bin
1c4542c91dd7dd4b7ca2130bcd41298636e58f8656189cf8c22bbb4a5bb00662		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115F9 11064 bytes
font_02_sfnt_off00013bda.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13BDA 4324 bytes

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