Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf0132884adc68d5…

MALICIOUS

PDF

74.2 KB Created: 2021-03-30 06:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2662e6500e9c366b0b4770e2311d2ec SHA-1: 962809d43c4a75ab5017056109d04374e838a1cd SHA-256: cf0132884adc68d5a0bd6868d6666c0ecb07b4efe0369e2f8554cb1344b42b8e
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to a 'technician resume template'. The presence of multiple external URIs, including one pointing to 'pelibifir.ru', indicates an attempt to redirect the user to download further malicious content. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript for malicious actions.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pelibifir.ru/123?utm_term=technician+resume+template
    • https://cdn.sqhk.co/gidulikegel/RoigJpx/code_metal_slug_3_apk_mod.pdf
    • https://cdn.sqhk.co/kominepoli/XMtgfg6/rounded_corners_or_square_corners_web_design.pdf
    • http://allostar.buzz/what_causes_calluses_on_your_toes38nin.pdf
    • https://cdn.sqhk.co/bamazaludez/YidjM6P/crash_team_racing_ps4_gameplay_online.pdf
    • http://kartaidatodemeleri.com/meluwugamiladifenn9cg3.pdf
    • https://cdn.sqhk.co/pulazapusaw/VnijHgf/risegi.pdf
    • https://cdn-cms.f-static.net/uploads/4477138/normal_600f61d03df7a.pdf
    • https://cdn.sqhk.co/ruwonumatag/hdlccgd/ice_cream_places_near_me.pdf
    • http://itdiscounts.info/990807759535bpbh.pdf
    • https://cdn-cms.f-static.net/uploads/4477156/normal_604ce5a7a7253.pdf
    • http://lojasamericanasbr.com/dusiribemogawabuxtttxl.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d9377ae8-1b92-471c-b139-c277a1bf4b08/how_much_is_a_armitron_diamond_watch.pdf
    • https://uploads.strikinglycdn.com/files/332cc47c-353f-406e-b0d7-d508769c7a30/according_to_howard_gardners_theory_of_multiple_intelligences_quizlet.pdf
    • https://uploads.strikinglycdn.com/files/218689c2-d43e-44bc-9e59-6bc8df9e4bc3/rebecca_daphne_du_maurier_hardback.pdf
    • https://uploads.strikinglycdn.com/files/d2ecaf69-7c4d-4941-8d8f-84fe4741e6d8/war_of_the_worlds_tv_series_season_2_release_date.pdf
    • https://uploads.strikinglycdn.com/files/56e4009e-1ae7-40b8-9ee5-ba6d79caceb4/kidenamonokedemasut.pdf
    • https://s3.amazonaws.com/sukobogixe/81180556476.pdf
    • https://s3.amazonaws.com/wamatasamegu/zibawiwi.pdf
    • https://uploads.strikinglycdn.com/files/2ea1ed5a-d6eb-4311-bfc9-54434f1ee5f2/vefapedesebame.pdf
    • https://uploads.strikinglycdn.com/files/1aa6ed6f-6339-42a1-aac4-a180a993e3a1/dusadowuzan.pdf
    • https://uploads.strikinglycdn.com/files/e33d8539-ac40-4659-8386-a491aa0cc8f4/valence_electrons_worksheet_middle_school.pdf
    • https://s3.amazonaws.com/xeponodij/dell_optiplex_960_sff_ram.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_off0000e4d9.bin
1043828c6b205841e026f92dce5622351a6b16eccd6edac0ba49e1c8fae43f10		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D9 5124 bytes
font_01_sfnt_off0000f619.bin
305f1ed1ffd2d34d4bdef71d78a48e55c30f32e75cf3be2cd0effa985367d733		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF619 11040 bytes

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