Malicious PDF — malware analysis report

Static analysis result for SHA-256 3098c90a42c27dbb…

MALICIOUS

PDF

75.0 KB Created: 2021-03-11 02:44:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 095d4a1d10d8b76cf317801e216f3441 SHA-1: 13e66fe33a5862daa69c63e0b4389a3dd9049373 SHA-256: 3098c90a42c27dbba5899b9f833bbe441cb0233bcaa1b1443eddb1bb8d42617d
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'jumiwimov.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/123?utm_term=gds+committee+full+report
    • https://cdn.sqhk.co/fesakesovoka/sEifgeq/baby_shower_bingo_games_ideas.pdf
    • https://cdn.sqhk.co/fovulifavu/Kjhjage/52562696178.pdf
    • https://pasorizafam.weebly.com/uploads/1/3/4/0/134096756/8174795.pdf
    • http://waliwosodumobu.iblogger.org/6236822078.pdf
    • https://cdn.sqhk.co/sopiloroda/Q66hbjx/telabovemetigixamigo.pdf
    • https://cdn.sqhk.co/labifikup/5HJhhU1/rulafivivivesidunopumibuz.pdf
    • http://vozujuluxe.iblogger.org/damron_men_s_travel_guide.pdf
    • https://tubanepa.weebly.com/uploads/1/3/2/7/132740320/samolezax-nofobesefolej.pdf
    • https://cdn.sqhk.co/pulisamog/egcijia/40108360745.pdf
    • https://gadudomarun.weebly.com/uploads/1/3/4/7/134705140/ledinidez.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fomudebipefasu/getting_blood_out_of_white_bed_sheets.pdf
    • https://uploads.strikinglycdn.com/files/3d9bf0d3-85ab-4bc7-92b0-fb2abe05ca05/55787969170.pdf
    • http://tupudenijusab.rf.gd/kidaratufomatepupadoful.pdf
    • https://s3.amazonaws.com/wurivuve/72789048042.pdf
    • https://s3.amazonaws.com/jubiferekaka/dear_comrade_full_movie_free_movierulz.pdf
    • http://zerekigukazaja.epizy.com/bunorepasugetog.pdf
    • https://s3.amazonaws.com/jenisozazewubo/33825042415.pdf
    • https://uploads.strikinglycdn.com/files/ff99445d-e0aa-4abc-bc3f-60ab99ab3a5e/tedadojujete.pdf
    • https://s3.amazonaws.com/bulozor/tidafenibipirujidadateda.pdf
    • http://vonodese.epizy.com/centrelink_reporting_gross_or_net.pdf
    • https://uploads.strikinglycdn.com/files/d17e96d0-0a1d-446e-b477-efc5825558e6/decent_sat_score_2019.pdf
    • http://rotirokarovul.rf.gd/how_many_episodes_is_the_stand_on_cbs_all_access.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_off0000e95f.bin
badacd1672d0151fe4ce077e6e79889260221b4968c1e46f566afe95c9f45fc6
pdf-font-stream PDF embedded font (sfnt) at offset 0xE95F 5124 bytes
font_01_sfnt_off0000fabb.bin
134866c07341bb700dd957332c480ded272c079abd04d68ac75f766708dc01eb
pdf-font-stream PDF embedded font (sfnt) at offset 0xFABB 10684 bytes