Malicious PDF — malware analysis report

Static analysis result for SHA-256 62a7d376500ccb21…

MALICIOUS

PDF

85.4 KB Created: 2021-03-18 23:34:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 9443de433bbca2b57330cc064c431599 SHA-1: e7e6949df41cee0b6112842a2c37a4a7d3235197 SHA-256: 62a7d376500ccb21d3fa9d179dbe3008f7250cf3eb4f0e16029ace516d3d9c3d
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as malicious by ML classifiers and ClamAV. The document body, though heavily obfuscated, appears to be a lure related to 'smart electrician timer'. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/strik?utm_term=how+to+use+smart+electrician+timer PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4481164/normal_5ff104a399ed6.pdfIn PDF document text
    • http://pubopogebam.22web.org/sigedetopoxutelitonubevu.pdfIn PDF document text
    • http://zixivudu.getenjoyment.net/compound_interest_rate_formula.pdfIn PDF document text
    • http://dezimazokuxulil.mygamesonline.org/dark_souls_3_marry_anri_ending.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459324/normal_5ffc2d9ef2671.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459479/normal_6028bab021b60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496148/normal_5fd32e0d68902.pdfIn PDF document text
    • http://siwupezomejen.getenjoyment.net/what_can_group_theory_be_used_for.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369166/normal_6026adbbd6408.pdfIn PDF document text
    • http://luxibenuguk.getenjoyment.net/how_to_program_uv-5r.pdfIn PDF document text
    • http://nefupanono.mygamesonline.org/o_que__gerao_beat.pdfIn PDF document text
    • http://lakuvekavepoka.iblogger.org/78738664020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vejegaba.atwebpages.com/is_onkyo_a_good_brand_amplifier.pdfIn PDF document text
    • http://pudugivifo.myartsonline.com/29146384867.pdfIn PDF document text
    • http://kesugoda.rf.gd/22276430542.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/android_bottom_navigation_remove_animation.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/wigutanurutivubizeta.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/dixoxobojubokutizib.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/lugudedefobu.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/gisanafutevuzokalikeda.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_off0001108c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1108C 4996 bytes
SHA-256: d6145d0ff79ca26006e89f3127d0238a6dadddb49165caa08950d86984f341d1
font_01_sfnt_off0001217e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1217E 11732 bytes
SHA-256: e132eb85c171fa3bbb84742d948f3c9b8c1c155c4adaf7b18eb6c957651340f8

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