Malicious PDF — malware analysis report

Static analysis result for SHA-256 77dc282475dc6c04…

MALICIOUS

PDF

79.5 KB Created: 2021-03-10 18:27:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ec7836b290df85dcc526b346b55a6e05 SHA-1: c564bfea6e72324ce66fde5d6f28c24760b5ecf2 SHA-256: 77dc282475dc6c04684c7ba0c34b8e1040662369456778dd22f19d6125e7e07b
96 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, with a high risk score. It contains an embedded URL that directs users to a site disguised as a combat training manual, likely a phishing or malware distribution lure. No scripts were extracted, but the presence of an external URI and the ML/ClamAV detections strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/wix?keyword=camp+x+combat+training+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4471514/normal_5fc894764c3de.pdfIn PDF document text
    • http://voduvalegef.66ghz.com/mavobap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379363/normal_600a49348b5d7.pdfIn PDF document text
    • http://dulexip.22web.org/xoderuvemoriduberan.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443803/normal_5fc5d73b1bbd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381320/normal_6031d6d41035c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387242/normal_601a82b7ad7ca.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fobexegedun.epizy.com/android_automatically_update_apps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca5c90da-e8d7-452a-86f3-ca03a834b979/37317459692.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/dotaxitixuzifofun.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/56256776054.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/burger_king_ingredients.pdfIn PDF document text
    • http://levasufut.rf.gd/23200626979.pdfIn PDF document text
    • http://pibekolovaxizon.epizy.com/53550197707.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/tijewusepuk.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/tesla_love_song_guitar_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/vebinux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c421db4c-0b39-4cc5-9db5-85ec4edbb07e/parts_for_grandfather_clock.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/596a9322-65f4-4579-90ae-23ddb4f4e60a/39165900046.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/kujemosejejuni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be3cf578-b3db-46af-bcd2-cf1a3969dd84/rakitu.pdfIn PDF document text
    • http://kusegewamuzazod.epizy.com/gawexujusuloj.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/vibufizefupaxuvawomopu.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/48010880787.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/the_book_of_life_cast_death.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3982e8ad-0e3e-4b6a-8013-f70d30e1eb95/80872498706.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE77 5068 bytes
SHA-256: 68fa0de3e23111a982ad49cfe6b13ed5f83210cc7f6d859907fbfe76acbd9dfd
font_01_sfnt_off0000ff9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9E 10196 bytes
SHA-256: 8b25cba5e4796ac55d4a5767b7a4f6f8c1a8ac77418aab8c4e9026e15d08c39e
font_02_sfnt_off00012258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12258 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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