Malicious PDF — malware analysis report

Static analysis result for SHA-256 67374dc4183492b7…

MALICIOUS

PDF

75.4 KB Created: 2021-06-06 23:34:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 000507374f653334aff26e36dd40b9d5 SHA-1: f0d0c5ce7df166a5240e6e43b80f53b1200e06c6 SHA-256: 67374dc4183492b7dfd2912225e22aa0087218e9486dfbea8ae1869b52400da6
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'smidgel.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to interview questions, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://smidgel.ru/pbw?utm_term=what+are+the+best+answers+for+behavioral+interview+questions
    • https://cdn-cms.f-static.net/uploads/4369330/normal_605ca1ba83e3d.pdf
    • https://cdn-cms.f-static.net/uploads/4491450/normal_60bcfbe77b35c.pdf
    • https://cdn-cms.f-static.net/uploads/4465250/normal_6062d63a0dc07.pdf
    • https://cdn-cms.f-static.net/uploads/4420600/normal_60b87a377e4e3.pdf
    • https://static.s123-cdn-static.com/uploads/4407795/normal_5ff1d1cf8e07a.pdf
    • https://static.s123-cdn-static.com/uploads/4382192/normal_600102af20825.pdf
    • https://cdn-cms.f-static.net/uploads/4482218/normal_6019fef846f2a.pdf
    • https://static.s123-cdn-static.com/uploads/4405929/normal_5ff2007267589.pdf
    • https://cdn-cms.f-static.net/uploads/4451355/normal_60b7aafc1ee15.pdf
    • https://static.s123-cdn-static.com/uploads/4413975/normal_5fca5fe4ab082.pdf
    • https://static.s123-cdn-static-d.com/uploads/4382781/normal_60b1c5cbd3ca4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nadupodifado.pbworks.com/f/drastic_ds_emulator_apk_paid_cracked.pdf
    • http://bezawagiga.pbworks.com/f/cch_xa_ti_khon_twitter_khi_b_nh_ch.pdf
    • http://zufiwuz.pbworks.com/w/file/fetch/144556653/why_is_my_victrola_record_player_not_working.pdf
    • http://xinunubaz.pbworks.com/w/file/fetch/144569814/18736552419.pdf
    • http://podimil.pbworks.com/w/file/fetch/144526488/paparebo.pdf
    • http://sofutikajen.pbworks.com/w/file/fetch/144725769/blue_merle_long_haired_dachshund_for_sale.pdf
    • http://jajisaparev.pbworks.com/w/file/fetch/144418446/voxukufosegalaluzogitowet.pdf
    • http://vamafob.pbworks.com/f/48649705112.pdf
    • http://zemilenasi.pbworks.com/f/rulipodupizilu.pdf
    • http://neruwuk.pbworks.com/w/file/fetch/144642030/sample_near_miss_incident_report.pdf
    • http://gafuxexosaru.pbworks.com/w/file/fetch/144666648/duwejogo.pdf
    • http://gorixose.pbworks.com/w/file/fetch/144616056/vogoluzuzopud.pdf
    • http://kizisoj.pbworks.com/w/file/fetch/144519615/the_core_competence_of_the_corporation_harvard_business_review_summary.pdf
    • http://zewalar.pbworks.com/f/appsc_group_1_prelims_question_paper.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e75c.bin
39141a290ec2256f522b148323e88d8dbdec9103f4d970a6fd38a458fc7f3d60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE75C 5288 bytes
font_01_sfnt_off0000f971.bin
ed54d7a0baac89e55b740833ae421690eec6d6158ccc37ac0bff41111533d4dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF971 11880 bytes

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