Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e7e770a4ddacb91…

MALICIOUS

PDF

65.3 KB Created: 2020-11-09 19:33:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: d957919b388c1db3610589c146f1992d SHA-1: 1c99c12e1e7acc97127a30b3e84110b4ea44e684 SHA-256: 0e7e770a4ddacb91d7d72583e0e1795200ad2f6357e44e40d0785eb07abdf402
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 URI pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though heavily obfuscated, contains text that appears to be part of the lure, and the embedded URI is the primary indicator of a phishing or redirection attempt.

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://traffset.ru/123?keyword=i+ll+see+you+in+the+rapture+mississippi PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381748/normal_5f8cbfc7bb923.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/godekux.pdfIn PDF document text
    • https://todoxaladavefuk.weebly.com/uploads/1/3/4/5/134529573/4532688.pdfIn PDF document text
    • https://pesadosopovito.weebly.com/uploads/1/3/4/2/134235692/wifogir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375504/normal_5fa6fe4322740.pdfIn PDF document text
    • https://niramividaro.weebly.com/uploads/1/3/4/5/134517418/322742.pdfIn PDF document text
    • https://kesolijizik.weebly.com/uploads/1/3/4/2/134265964/tipamiziwisorufa.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/dinilederu/survivalcraft_mod_apk_android.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/fore_and_aft_carry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8935502b-d6a9-4ba7-af01-9892980b3895/vapiwawowexek.pdfIn PDF document text
    • https://s3.amazonaws.com/waxejajinigafu/tekesugonelipukerasazu.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/cae_exam_practice_writing.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/adverbs_of_frequency_game.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/4360633544.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/experian_login_account.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50da4e9d-21a6-43df-9b69-ca4edece11f6/munazajoj.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000af3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF3C 5100 bytes
SHA-256: cb693b620596112b7a3b8dc69e6d0684c757ebd5cb99efb8023e7f90a2f96ada
font_01_sfnt_off0000c06b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC06B 9924 bytes
SHA-256: be2720c9e84554f85568f16fca87f1e99a9861aa2a703cc310aed0ed8cc8dae9
font_02_sfnt_off0000e292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE292 16160 bytes
SHA-256: 7e63eb3bed9c4ceaf47e86587cf77a789dba98dd2b4db382f0c7f052a0aeb8ce

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