Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb31faa20f50c857…

MALICIOUS

PDF

80.7 KB Created: 2021-04-19 12:44:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8d3132e95863b88aade17d8fe712ac43 SHA-1: 77d4c922c105349817606e1a36df35c58c426765 SHA-256: eb31faa20f50c857d09fa8653b0723e2cf5c8ca7c0d392bd2b8fc42e40dd2360
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to search queries, aiming to trick users into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/strik?utm_term=how+many+calories+in+a+taco+bell+rolled+chicken+taco PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449769/normal_604b9df856cbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422180/normal_606e8f861a6b7.pdfIn PDF document text
    • https://cdn.sqhk.co/zepipawetopi/pieijij/jovegevurawunor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447631/normal_604aa1f2477bd.pdfIn PDF document text
    • http://pobasomitiji.22web.org/92794482512.pdfIn PDF document text
    • http://pasasem.iblogger.org/kebevik.pdfIn PDF document text
    • https://cdn.sqhk.co/fafojipedul/cgiiheu/uc_browser_online_video_download.pdfIn PDF document text
    • https://cdn.sqhk.co/miloxuso/SibhjfC/disneyland_park_california_map.pdfIn PDF document text
    • https://cdn.sqhk.co/xadakede/qCBp4ib/xodilizina.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://lafanibawonol.rf.gd/baghban_movie_video_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3da34b57-52d8-4156-9d8f-794dcff157bf/81168963882.pdfIn PDF document text
    • http://taduduxedabed.epizy.com/caballo_de_troya_6_jj_benitez_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e13bfc53-d744-4085-96b3-3c6dac8e9c89/doll_houses_for_sale_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3ede41c-746d-43fb-90e1-4d718803e6bc/56964947666.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f51d27ce-175c-4d85-8c13-7adc715d41c8/netigotegejurubemuvisaxez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22445e91-62fb-4693-811f-df200af0b8bb/pevewako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/909264e9-026e-4e17-97a7-eeb987559168/husqvarna_385xp_vs_390xp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f861486d-9b8e-402a-8cfa-933b115648cd/motorola_xts_5000_battery_clip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8aad5536-6692-45f0-93d3-e5fbaf43b71f/what_is_the_poorest_place_on_earth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a57fcb35-17de-4271-9b37-f7fc428b8e10/fizinev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d03b8644-2322-4bb7-9ed1-3562b7e9aa3c/daligerafimigawu.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_off0000f03c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03C 5328 bytes
SHA-256: 32a4201147c870ccd57d61aff75b0625f03dc9743b07ef22eb3acaaaac63d890
font_01_sfnt_off0001022d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1022D 10732 bytes
SHA-256: 800301b84f3497d247a1c131c6d6788e2e2162c165a4a91dda4df829e1dfbd01
font_02_sfnt_off000126ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126EC 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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