Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a1edbadc3a4c47f…

MALICIOUS

PDF

76.8 KB Created: 2021-03-03 14:16:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7d6d84b362c99a49b2c15c8511442097 SHA-1: 7e666aff60023b05a0ac8c35d0fe24061df079a7 SHA-256: 1a1edbadc3a4c47f299ad764e524616ba43f944072e07e759aa31a7bb1d3194c
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL designed to trick users into clicking it by appearing as a search result for a specific auto part. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of an external URI and the nature of the embedded content point towards a social engineering attack.

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://baarspo.ru/wix?keyword=2000+ford+ranger+manual+transmission+speed+sensor+location PDF link annotation
    • https://cdn.sqhk.co/bitizulokiva/gigjDJ8/wiguxijusiz.pdfIn PDF document text
    • https://cdn.sqhk.co/wifilivemij/jdrDuid/brawl_stats_for_brawl_stars.pdfIn PDF document text
    • http://ramubananene.iblogger.org/cereus_cactus_information_in_marathi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417049/normal_5fff567e3b016.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461495/normal_5fecf7bc6110b.pdfIn PDF document text
    • https://cdn.sqhk.co/bularalunop/hjifhgp/kifadexosuxedikolekojunew.pdfIn PDF document text
    • https://cdn.sqhk.co/pifizumux/mgfihto/teddy_bridgewater_vikings_contract.pdfIn PDF document text
    • https://cdn.sqhk.co/rubalibuzodi/VgezLib/brief_history_of_japan_book.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://levasufut.rf.gd/what_type_of_oil_does_a_ryobi_pressure_washer_take.pdfIn PDF document text
    • http://dozodikud.epizy.com/rafiwutagevub.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/bhoot_fm_12_october_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/12869740669.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/dslr_camera_ki_photo.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/mathematica_5._2_free_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/garepuwedosarimuxiwus.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_off0000ef6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF6D 5652 bytes
SHA-256: 4247395a1b11ab776b451a1540fecf8f74c922b7c880ae7a541779847429b0a1
font_01_sfnt_off00010292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10292 10392 bytes
SHA-256: a8753facd2017b18e9eab3cd13dc819e591ac3d26f336e28e2bca22c9424994a

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