Malicious PDF — malware analysis report

Static analysis result for SHA-256 419d7e0dd6c8a5ed…

MALICIOUS

PDF

83.9 KB Created: 2021-03-20 21:54:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 65e4e1c30d29052e2146432b2a0fb3f6 SHA-1: 14a6efbbacbbbefcfbc2c5d06d158bda5abe0542 SHA-256: 419d7e0dd6c8a5ed625fcc069ab32de0cb4372cb5152a100be26f8189855f88b
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious documents designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/award?keyword=ben+jonson+bartholomew+fair+pdf PDF link annotation
    • http://pugisapi.mypressonline.com/jowolokiripubarevifopej.pdfIn PDF document text
    • http://wivuperafuzo.mypressonline.com/dupilaxidakosapokega.pdfIn PDF document text
    • http://pifedalune.medianewsonline.com/tratamiento_de_ascaris_lumbricoides.pdfIn PDF document text
    • http://mamubisuk.mypressonline.com/java_spring_tutorial_for_beginners.pdfIn PDF document text
    • http://gusebozaromurel.mypressonline.com/vupifetiludik.pdfIn PDF document text
    • http://wurilozi.scienceontheweb.net/kuvalavonudafup.pdfIn PDF document text
    • http://bivalumasev.iblogger.org/bufelozokad.pdfIn PDF document text
    • https://lezexoxutipeb.weebly.com/uploads/1/3/4/4/134462335/lufovijuralif-bikavoxutolofu.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/zawujalixenow.pdfIn PDF document text
    • https://nebelifufenav.weebly.com/uploads/1/3/1/4/131437331/munofanosu.pdfIn PDF document text
    • http://feruwikabi.iblogger.org/bhaktha_siriyala_kannada_movie.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xuxerutiwuv.onlinewebshop.net/3d_max_tutorials_for_beginners.pdfIn PDF document text
    • http://wobanunep.myartsonline.com/tn_6th_pay_commission_report_download.pdfIn PDF document text
    • http://fajegefifozibe.rf.gd/voxokexogirar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b56d6df-f07f-4beb-a8b0-280a3abccebd/vajajobakifo.pdfIn PDF document text
    • http://lokuvutifinulef.rf.gd/domasegej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcb66f90-1ae3-4302-8d67-5f620effe708/stock_market_hours_xmas_eve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48e11e32-7c1b-4b75-a6f9-3846a6dec21e/kung_fu_panda_3_cast_rebel_wilson.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2ac482c-071f-4592-b048-904d38e64abf/free_air_fryer_recipes_australia.pdfIn PDF document text
    • http://xinifaduzinuvu.onlinewebshop.net/muvidaponit.pdfIn PDF document text
    • http://bejovivijif.epizy.com/basic_english_words_for_grade_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97354fda-16d1-4fbe-8f24-0eb82bf0d95d/19780098970.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_off00010679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10679 5640 bytes
SHA-256: 10c5e18e945a84fd298d61466e891bcad836babc3ce9613d374cd830a89826f2
font_01_sfnt_off0001198b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1198B 12000 bytes
SHA-256: 960dbc19eac4456069c74ec9ea46223532a1f99aeae8fe7a6ca88b71afb4bc69

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