Malicious PDF — malware analysis report

Static analysis result for SHA-256 24e1f6046067b276…

MALICIOUS

PDF

75.7 KB Created: 2021-03-04 15:14:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d8032f9530e109bdab61a9048f9fec95 SHA-1: bee04d3354f449593585e964ae4ed76afe5db8d7 SHA-256: 24e1f6046067b27643a47fe241e48dab01e3261db44716f28f71230552ae9fff
126 Risk Score

Malware Insights

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

The PDF file 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. The document body, though heavily obfuscated, contains text related to car prices, likely serving as a lure to direct users to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/aws?utm_term=maserati+granturismo+convertible+price+in+india PDF link annotation
    • http://todawis.22web.org/husky_gas_pressure_washer_2200_psi.pdfIn PDF document text
    • http://zigitodaxepugi.22web.org/bobopepib.pdfIn PDF document text
    • http://sberpodarok2020.online/tank._io_unblocked_at_schoolc67s3.pdfIn PDF document text
    • http://urott-hu.com/how_to_start_boxing_at_home_without_a_punching_bag23z4q.pdfIn PDF document text
    • http://idealicaufficiale.website/juvevekuzulx7.pdfIn PDF document text
    • http://cardioactiveuficiale.site/topatixuto43ojx.pdfIn PDF document text
    • http://fumigatoff.online/lotoxomixekawonuv3w3ok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449793/normal_600aaf6bb9f5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454436/normal_5fe607dbe4638.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/karejixij.pdfIn PDF document text
    • http://dodigemadepa.epizy.com/hp_designjet_500_plus_not_printing_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5d06523-05ae-4b0d-9d7e-f6bf210d49a5/xbox_360_remote_charging_station.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bd627ae-a694-493a-898d-6c2f4c880704/lifopeluxobujokesilodogi.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/78747411349.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72b48d65-963c-4959-bd96-a0afd3108865/samsung_nu7100_50_inch_price_in_india.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_off0000e8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D6 5596 bytes
SHA-256: dbfc0f7a77e6a201f0659191f61475820020fdae14ea515cdccebb776676ff89
font_01_sfnt_off0000fbd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD7 11176 bytes
SHA-256: 9dd778b3f1d7b8da74af0982fc1ae4e85b53833472e5e466d4a8c4e1a01a4003

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