Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f1cf133780d1835…

MALICIOUS

PDF

85.8 KB Created: 2021-03-24 21:07:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b0f4117cce1d87c594819262ba2b9933 SHA-1: 3da961fe4aba529a4b2082fe69436fc37928f6f4 SHA-256: 7f1cf133780d1835df075c842ad80bb23050b587163c08a8f1bb16bccf6c0f0d
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document contains an embedded URI pointing to 'https://maypoin.ru/123?utm_term=tamil+new+movies++online', which is likely a malicious landing page. The document body, though heavily obfuscated, contains text related to 'Tamil new movies online', suggesting a lure to attract users to the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://maypoin.ru/123?utm_term=tamil+new+movies++online PDF link annotation
    • http://diburawu.22web.org/ifsb_report_2019.pdfIn PDF document text
    • http://votapusi.mypressonline.com/benjamin_franklin_autobiography_download.pdfIn PDF document text
    • http://kuvezowepo.scienceontheweb.net/13125427124.pdfIn PDF document text
    • http://lunagogafoxoj.sportsontheweb.net/kenokazopoloxututise.pdfIn PDF document text
    • http://texivej.sportsontheweb.net/rabikapanufikaraledifojad.pdfIn PDF document text
    • http://wixujikubipom.mygamesonline.org/how_to_fix_my_pulsating_dyson.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f19e283b-679d-4ed5-ad61-60b9dc16a03c/62615590817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d8d9141-7ba0-4d6b-ab4c-98ef7ad204d4/doxewasuwofuxosupam.pdfIn PDF document text
    • http://xetaratof.rf.gd/84250227170.pdfIn PDF document text
    • http://pikubub.onlinewebshop.net/uppsc_sociology_syllabus_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/ashirvada_mantram_in_kannada.pdfIn PDF document text
    • http://wotidupodugi.myartsonline.com/xufowujadinutalos.pdfIn PDF document text
    • http://dukutogesedu.epizy.com/53430048707.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09e8f29d-0af8-432e-b262-7e460dd7f816/5_steps_to_heal_leaky_gut_dr_axe.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/what_is_the_best_automatic_self_cleaning_litter_box.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/zisupojapijujapagudu.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/97282338637.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/wound_infection_antibiotic_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/limogaxiwurivitolebuxajib.pdfIn PDF document text
    • http://gafodix.myartsonline.com/reasonable_accommodation_request_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9377bdb-c1c8-4d13-b2a1-4e980f70d155/8746301873.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/vermont_castings_intrepid_ii_for_sale.pdfIn PDF document text
    • http://vixabediwudofi.epizy.com/is_pennywise_mentioned_in_dark_tower.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e83c8c2-0769-43a8-a55a-396601be978d/27013292662.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001126f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126F 4836 bytes
SHA-256: d94535a9b486f63e5b1c0b3fa8878841daeafdc618e4cac68ee1060110d941be
font_01_sfnt_off000122e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122E4 11584 bytes
SHA-256: 63e5fcd682e2ed77fec6dfd7cd537e5f7de0aecbb7f484e32a902fae1bd2500d

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