Malicious PDF — malware analysis report

Static analysis result for SHA-256 c267cccbfe4dea5e…

MALICIOUS

PDF

86.9 KB Created: 2021-03-19 21:06:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 279b47260e506658099de68618e18f92 SHA-1: b64a6d53fa54150d1ca30314ed30e782ba4309b5 SHA-256: c267cccbfe4dea5e80d20084d965437f7f1cd4203c14281cf0b81b8c8e853d9e
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://gimoguvi.ru/123?utm_term=4k+bollywood+music+video PDF link annotation
    • http://repair-monokoles.ru/how_do_i_know_if_my_diesel_injection_pump_is_badgplii.pdfIn PDF document text
    • http://lirifajo.sportsontheweb.net/24484071314.pdfIn PDF document text
    • https://wesoxiworikezux.weebly.com/uploads/1/3/1/3/131380467/8198055.pdfIn PDF document text
    • http://vodizurulenega.mypressonline.com/geographical_map_of_africa.pdfIn PDF document text
    • http://kozidozilujivox.getenjoyment.net/how_to_get_an_autodesk_student_license.pdfIn PDF document text
    • https://bewevirat.weebly.com/uploads/1/3/1/4/131437926/xalixivenimanizimole.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/biology_book_in_bengali_version.pdfIn PDF document text
    • https://koxidofajutu.weebly.com/uploads/1/3/5/9/135971573/zufuxe-nojirivopovo-sewudixuxef-dilixixuxigetig.pdfIn PDF document text
    • http://kidiwutimako.mygamesonline.org/fundamentals_of_astrodynamics_and_applications.pdfIn PDF document text
    • http://uablog.website/how_to_get_out_of_a_contract_marriagebsm5d.pdfIn PDF document text
    • https://gujejedadun.weebly.com/uploads/1/3/1/3/131398181/fe6a30af8a587e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sokagozu.rf.gd/mejewidewigitivuzog.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/85466952699.pdfIn PDF document text
    • http://vubixegigag.rf.gd/vamugelutomi.pdfIn PDF document text
    • http://vazenuzowupol.rf.gd/ctv_4k_android_7._1.pdfIn PDF document text
    • http://ditorodizo.epizy.com/burra_katha_songs_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/ba_3rd_year_date_sheet_2019_mjpru.pdfIn PDF document text
    • http://lugenizuridaj.atwebpages.com/air_brake_test_ontario_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/lozesepaxaruzexowaretaboz.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/3506180658.pdfIn PDF document text
    • http://wegamaluperetuj.atwebpages.com/how_to_get_rid_of_a_rash_on_my_newborns_face.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10061 5232 bytes
SHA-256: 465af393ff5df85269014c18460fc3b8ef7bdbc42085cdb4dba575cbc7f2001b
font_01_sfnt_off00011246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11246 11796 bytes
SHA-256: 8660137ce64d3e673e7f33302a3783d1ee9dad94e35a8a693faf8d9b5d4e70f6
font_02_sfnt_off000139a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139A7 16036 bytes
SHA-256: 9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940

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