Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb04fd5680b08050…

MALICIOUS

PDF

77.8 KB Created: 2021-03-17 11:39:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: d17157d0a09478fbcb80511b53fd202b SHA-1: 6f954d78b5485e4cb38b13e38a4f94320181c2e1 SHA-256: cb04fd5680b080504d7aa9c916773f1cd969f662f6e2d64a0fe9cc27f17d0341
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that points to a suspicious domain, likely intended to trick the user into downloading further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URI are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nipisod.ru/award?keyword=anthony+giddens+libro+sociologia+pdf PDF link annotation
    • https://cdn.sqhk.co/bajipugotox/fzhbibU/gesobojijiwabitizipenele.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379731/normal_6032a668626bc.pdfIn PDF document text
    • https://cdn.sqhk.co/muluxodipoto/i1dghii/bubble_trouble_game_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/tasewapimol/jjaZ8pW/96106274557.pdfIn PDF document text
    • https://cdn.sqhk.co/gapebeve/iarI4ji/cooking_games_christmas_cake_house.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418001/normal_604db30ccf389.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/Pibjjjr/tusagewitowizik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489422/normal_60037c83374a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454287/normal_60249d6c2799b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384470/normal_5fedf092d4470.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/rawesaragegugar/zapukerumitujanenado.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/16749055884.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/78764631381.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/blacksmithing_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f2fcaa7-519f-4a65-aeb1-874ad7451a16/schwinn_230_recumbent_bike_assembly.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/45110773865.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/the_greatest_showman_songs_mp4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3d45936-e42b-4445-b00e-308f527408c0/garmin_920xt_band_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea351a2e-95b9-4a1f-8b2c-b9b733a69b31/principles_of_engineering_thermodynamics_8th_edition_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/114a6611-c013-4aa9-a88d-59c7da943f3a/delonghi_magnifica_review_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37c5de62-fc34-467f-bd3d-338edf83c8b3/pakibatononatisusufib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0a2c865-7cf7-449f-879a-ef2229610f15/83952161420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32b11409-ce7a-4252-981c-d090923e646b/walking_around_the_city_song.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_off0000f03f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03F 5648 bytes
SHA-256: ba7bd1c8e6f1141efe5904bf4cad387b64a154325ae9bf4b1497594f2c97a931
font_01_sfnt_off0001037e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1037E 11244 bytes
SHA-256: 59f780d11289f0355198db54d14cfac5f6932dd895dba5aeee82296dba92152d

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