Malicious PDF — malware analysis report

Static analysis result for SHA-256 b40e16ac271282a9…

MALICIOUS

PDF

70.8 KB Created: 2021-02-19 08:49:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: a35e836d24b32d5d8566a1c2fdd7a501 SHA-1: 25ebe2a16814e890616bb5b1d1a00c89bfaa4cae SHA-256: b40e16ac271282a9e3f58c8e19abd68c45e2dda3f43fb3e2323ce1c4c06cb208
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL pointing to 'baarspo.ru', which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains text related to 'Lifetime fitness romeoville spa', suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://baarspo.ru/wix?keyword=lifetime+fitness+romeoville+spa PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379380/normal_5fe1eeed947e0.pdfIn PDF document text
    • https://cdn.sqhk.co/zipodumup/fhghi4V/las_vegas_casino_hotel_deals.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469349/normal_5fe42d37baf86.pdfIn PDF document text
    • https://cdn.sqhk.co/dasofuduveje/cABidic/rusewenimavi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374177/normal_5ffa4ff19db74.pdfIn PDF document text
    • http://fojuzoxine.22web.org/cartosat_data_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412160/normal_5fdc8099d1242.pdfIn PDF document text
    • http://lnstagram-helping.live/dragon_s_dogma_dark_arisen_strategy_guidesr5ik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_6027f2c22af34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387825/normal_5fe54ea8a2d56.pdfIn PDF document text
    • https://cdn.sqhk.co/difejekexe/jcrihid/15960034045.pdfIn PDF document text
    • https://cdn.sqhk.co/loganidob/hetSAge/pipexugumifojunoj.pdfIn PDF document text
    • https://cdn.sqhk.co/dexizajifu/gajehj6/vivibugexebu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370791/normal_6008cb5d6ef86.pdfIn PDF document text
    • http://vvinorama.fun/mckenzie_exercises_for_lumbar_herniated_discigdku.pdfIn PDF document text
    • https://cdn.sqhk.co/rivitovolu/hjzgdjj/disney_crossy_road_secret_characters_wreck_it_ralph.pdfIn PDF document text
    • http://vpntop.info/19841214483h7va5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d8f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F3 5048 bytes
SHA-256: 9aafc2c502380cc4426a460d83401dff60b1854a6aec24e2aebbbe539810faf5
font_01_sfnt_off0000ea15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA15 10644 bytes
SHA-256: 58ca7a77742ce95ce926cc373084d215c0a7b9811a411a6ba15d23a39bb63482

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