Malicious PDF — malware analysis report

Static analysis result for SHA-256 29f1cb9360b0c894…

MALICIOUS

PDF

79.4 KB Created: 2021-03-22 09:50:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 07d1131d8e58b42c89851bb6a92cba2f SHA-1: db9f90e4589e44895fca0add6907c7dc3bf1120e SHA-256: 29f1cb9360b0c8940718033ff79e006bc06ac590917a2358d976a830d836add8
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, despite some being marked as benign, suggests an attempt to redirect the user to potentially harmful content. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall context points towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://cdn.sqhk.co/nukusigemug/eOMghic/lesalogulafijarubago.pdf In PDF document text
    • http://fikakutipid.mygamesonline.org/sandisk_clip_sport_wont_charge.pdfIn PDF document text
    • http://letnesil.xyz/51331296820sk4et.pdfIn PDF document text
    • http://spencermcman.us/logavagifijamekadonejuxe3jqt6.pdfIn PDF document text
    • http://buytoday.cc/apiculture_book8zuyw.pdfIn PDF document text
    • https://cdn.sqhk.co/bikakigiben/ieiichi/ganogilasunovokuperokaga.pdfIn PDF document text
    • https://cdn.sqhk.co/pumapajewa/ht2hbgi/hd_love_couple_wallpaper_for_android.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://feedproxy.google.com/~r/wb/ENAH/~3/Xr6F2PkPTcg/wb?keyword=williams%20allegro%202%20usedPDF link annotation
    • https://ab737b70-891a-4a1f-8db9-ee548211cb31.filesusr.com/ugd/ce14f3_78b2b78f24e9429da985d8a9933eb201.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/3770118884.pdfIn PDF document text
    • https://fb413987-6e77-4bf1-aaa6-e97eb550fbee.filesusr.com/ugd/108936_8130856ca04841bb8fee0d70838f1513.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/zefemuluzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99ce0931-300e-4f5f-a399-1cb7171b63b2/dan_brown_origin_critics_review.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/teeter_hang_ups_ep-560_sport_inversion_table.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53b7326f-21aa-4f6c-b1c1-57351ed36969/82047307835.pdfIn PDF document text
    • https://1cf095b7-1d29-4152-b82c-7733cf7ba0c7.filesusr.com/ugd/c1de29_4cfc22d27312491cb9fce39aa1a6d6f7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e748a7b-3eef-424b-8f6c-e104d1f19d70/supply_chain_management_programs_in_florida.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/pokemon_ultra_sun_and_moon_strategy_guide_collectors_edition.pdfIn PDF document text
    • http://lexekuduwowig.atwebpages.com/los_compas_y_el_diamantito_legendario_mega.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/arte_y_arquitectura_barroca.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_off0000eae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE3 4984 bytes
SHA-256: bbdf573afdc04adf60e211a65193952f6209674bf1547a4d43ee2516660e43c7
font_01_sfnt_off0000fbd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD8 11444 bytes
SHA-256: b447d49184c97e2427fc7e72c4832d948ca43e269bbf327cab2dc87ce7381e92
font_02_sfnt_off000122c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122C0 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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