Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc1d401ff5ef125c…

MALICIOUS

PDF

96.1 KB Created: 2021-04-06 16:32:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 072469bd567e7887cb7f28660cf3dd3b SHA-1: dbdaa1704dd06fef1e6041ddb85a6cc25f5fe9f8 SHA-256: fc1d401ff5ef125c42911bb375fa922a9400ede7f59c98d7380595f2648ccd7e
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'https://zajinet.ru/strik?utm_term=manual+del+conductor+de+maryland+en+espa%25C3%25B1ol', suggesting a phishing or malware distribution attempt. The document body, though partially corrupted, indicates a lure related to a 'Manual del conductor de maryland en español'. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/strik?utm_term=manual+del+conductor+de+maryland+en+espa%25C3%25B1ol
    • https://cdn-cms.f-static.net/uploads/4421969/normal_604678fb2443b.pdf
    • https://cdn.sqhk.co/tegasipitif/hjam9jh/sculpture_center_director.pdf
    • http://detonic-italy.website/valuation_mckinsey_5th_edition_downloadnrx4h.pdf
    • http://junelizirigoroj.iblogger.org/vubikewu.pdf
    • https://cdn.sqhk.co/moviferu/gSxiehW/download_video_from_instagram_message.pdf
    • https://cdn.sqhk.co/koletexun/1MhfPQQ/dumb_ways_to_dash_gameplay.pdf
    • https://talaxosukizarom.weebly.com/uploads/1/3/0/7/130775084/wezotowijeram-zagomopujasis.pdf
    • https://cdn-cms.f-static.net/uploads/4481520/normal_5fd2a6f3ec5a2.pdf
    • http://cooldomen.space/447816224033aerr.pdf
    • http://dmdmassage.com/how_to_change_time_on_timex_clock77e0a.pdf
    • http://mihetos.xyz/leduguvowoxexogiduwurimmctk.pdf
    • http://zoomita.fun/kofori7uxbc.pdf
    • http://ketousa.site/pablo_neruda_poetdsd2c.pdf
    • https://xoselupovogim.weebly.com/uploads/1/3/4/6/134610719/somarekatuju.pdf
    • http://help-copyrightservice.xyz/8307612473d22d4.pdf
    • https://cdn.sqhk.co/tubozejo/a4ISsVl/99440648987.pdf
    • https://cdn-cms.f-static.net/uploads/4466662/normal_5fdbc2c0e3d5b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://juninowixa.epizy.com/how_to_make_fire_stick_remote_control_tv_volume.pdf
    • http://xoviketi.epizy.com/powerpoint_themes_free_professional.pdf
    • http://rorugaroli.rf.gd/38398580186.pdf
    • http://natadomemorad.epizy.com/boreal_forest_and_climate_change.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_off00012d51.bin
9251c20a192e0681f7d0aaa663aef5240c5b7acf972fed320d95e4f42ac1d7df
pdf-font-stream PDF embedded font (sfnt) at offset 0x12D51 5540 bytes
font_01_sfnt_off00013fe0.bin
ab3b37ecd096af4beb12d69d8bd5a65d45fa39f8d98bef43d8cf1fe59219f6d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x13FE0 17632 bytes