Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6310ce7ddb522f2…

MALICIOUS

PDF

66.3 KB Created: 2021-03-01 06:58:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 662204df6e596df3d701cfbdf4640984 SHA-1: a3c8290a7ef92cb471d364beb576190e8fde4b0b SHA-256: a6310ce7ddb522f24933eaf05785456fadf7c456afd164a1de0a3235bb6b76f2
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for a phishing or malware download attempt. The document body is heavily obfuscated, but the presence of external URIs and the overall detection suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/wix?keyword=words+with+eie PDF link annotation
    • http://technodom11.com/87986653578a5e2m.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/jYgh3M5/dofal.pdfIn PDF document text
    • http://gufutaca6.xyz/72372780719tfjal.pdfIn PDF document text
    • http://mynasert.online/827785138927p2q3.pdfIn PDF document text
    • https://cdn.sqhk.co/bisidilit/jgawjhx/free_download_red_heart_pictures.pdfIn PDF document text
    • http://tersq.fun/36039002608zi0c7.pdfIn PDF document text
    • http://sale50.pro/adobe_acrobat_dc_2015_serial_number_location0etmm.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/ic6ggii/world_war_iii_1982_videos.pdfIn PDF document text
    • http://air-calm2.club/gowomomigozuwovng0m1.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/xisefowu/boss_baby_tamil_dubbed_movie_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/acer_chromebook_11_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/conversion_de_milimetros_a_pulgadas_formula.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/71503341064.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/where_is_town_lake_in_austin.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/kejakekozu.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_off0000ca2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA2E 4776 bytes
SHA-256: c5e53a8a5a3373b4a649d8a6e1451d600b8a7dcb914ec3b424995acb9ee50acc
font_01_sfnt_off0000da7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7B 9868 bytes
SHA-256: c05e18a622106972a1430f4f494d9aef15f06a92a5da3a2979e0edea1137b58e

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