Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d7550db7c672ffc…

MALICIOUS

PDF

116.6 KB Created: 2021-01-27 19:47:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a20ea1a801963695c3e8e899ac68e137 SHA-1: 3a92d34270ad15e917c7c22eeb90387d54c95635 SHA-256: 7d7550db7c672ffc11da6dcc458a1d31eee0988d5d9b0767ce839562d9de311b
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, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains references to a sports contract, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/123?utm_term=russell+westbrook+contract+rockets PDF link annotation
    • https://topemarepebide.weebly.com/uploads/1/3/4/3/134316461/9478502.pdfIn PDF document text
    • http://jowitut.iblogger.org/21456216462.pdfIn PDF document text
    • http://onlinetyz.xyz/venegewisofedulz247.pdfIn PDF document text
    • https://pinafizupefed.weebly.com/uploads/1/3/1/3/131380591/nafidina_nemejisezurebe_jurexo.pdfIn PDF document text
    • http://inmyshtangen.xyz/comptia_network_n10-_007_free_downloadah2mf.pdfIn PDF document text
    • http://detonicro.website/xodep78jxw.pdfIn PDF document text
    • http://koprovk.xyz/tadumijotetejazuxudn7gt0.pdfIn PDF document text
    • http://ideaita.fun/xivadujazezuwijin9n14s.pdfIn PDF document text
    • http://best-ital.fun/nba_2k20_pc_game_system_requirements7fvdb.pdfIn PDF document text
    • http://216tilford.com/58898445414gs9hb.pdfIn PDF document text
    • https://pigamudabuv.weebly.com/uploads/1/3/4/2/134235231/pomemi_ziwot_nulupemopamoz.pdfIn PDF document text
    • http://ompala.store/dunkirk_netflix_release_datecylbx.pdfIn PDF document text
    • http://idealsit.fun/rectangular_box_with_x_emojiivbv1.pdfIn PDF document text
    • https://vonorakukipi.weebly.com/uploads/1/3/4/7/134721252/jiwawusowev.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/dexodekelaseki/85367616387.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/briggs_and_stratton_repair_manual_16hp_vanguard.pdfIn PDF document text
    • http://xegiseko.epizy.com/jazawibebawebi.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/kogopobimamelosuba.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/sheetrock_over_old_plaster.pdfIn PDF document text
    • http://figapow.epizy.com/iam_policy_cloudformation_template.pdfIn PDF document text
    • http://merojupamen.epizy.com/15193851297.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A69 5096 bytes
SHA-256: 3da6f2c4d20186488f92682d79c5aceabd9b30bb6c950790f7157084cdadb132
font_01_sfnt_off00019be7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19BE7 11984 bytes
SHA-256: 963019dbcaa9e788b048a9cd1952a419ecfa626cb894754c97615c0a9c491437

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