Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0c93cf34ff835ae…

MALICIOUS

PDF

90.0 KB Created: 2021-05-21 09:03:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 1ccb44f1b72fae6dc5e83be2bf83c209 SHA-1: 3cde03083c5cffa905dd6021fe6c18e5660bf5ca SHA-256: d0c93cf34ff835ae5e7bd16c2cd9598ffb77ef1832f6b1a7d98e03b40ac12452
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. No scripts were extracted, but the presence of the external URI suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://druttle.ru/strik?utm_term=%25C3%25A9valuation+anglais+cm2+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389823/normal_60617b045f68e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381997/normal_6000ab35686e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412388/normal_5fde750c80906.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375210/normal_604baad4d371c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480753/normal_5fec962823710.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414848/normal_60089616daef4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494677/normal_6016b4da6e816.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421208/normal_6023aafc10278.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449177/normal_5fec7f68045c7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/how_to_use_a_sky_rover_helicopter.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/feguvuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6561e95f-4fe7-482b-ad34-1ca1b9974bcb/xokegojuwiduponupox.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/whole_wheat_pita_bread_nutritional_information.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/call_of_duty_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/82305555183.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/how_to_draw_manga_basics_and_beyond_download.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/pabenutewasu.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/tavefiziwid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcdf141e-4940-42bd-b2ed-7995299be3b2/25238999873.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/google_sheets_right_to_left_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c9990bd-6c22-4c72-9e3c-e9fc563e8b77/vedazogomogewevugozit.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/47696567005.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/jebuvemaratubuwinut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02ea91df-4fd3-4ef3-b425-99530e179b6f/macbeth_act_one_scene_1-3_summary.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000109dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109DD 6476 bytes
SHA-256: 90fde11a3f0037fc907ae8b61c813580ea22ef209ebde2636d9354b201d9be1f
font_01_sfnt_off000119e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E4 5548 bytes
SHA-256: 67be59fa3c07394fac488ac0fe1b257eb4408e13f5809c0a50d1ddb7ab614f2d
font_02_sfnt_off00012cd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CD3 13712 bytes
SHA-256: ce7a3142962cf5de8b797f2aa199827b57646f7ba27618e3b0cb672e581a49b5

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