Malicious PDF — malware analysis report

Static analysis result for SHA-256 d70721b82763bb6f…

MALICIOUS

PDF

73.9 KB Created: 2021-03-04 01:50:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: c22529106bdca034f8c43441202ba5c2 SHA-1: 17490d76d09cc15346c8fffd5057df892258828e SHA-256: d70721b82763bb6fb5df8eec3a46b6fc2a10265c1bb72dd528b7c7435aabce90
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 URI pointing to 'xajibur.ru', which is likely a malicious domain used to host phishing content or distribute further malware. The document body, though heavily obfuscated, suggests a lure related to religious or informational content to entice users to click the embedded link.

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://xajibur.ru/strik?utm_term=who+is+the+queen+of+heaven+in+the+book+of+revelation PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4463298/normal_6016c115ca97b.pdfIn PDF document text
    • http://ch-data-2a8fv9s.pw/stretches_for_flexibility_youtube0ihfy.pdfIn PDF document text
    • http://tomandbxof.site/nintendo_3ds_rom_pokemon_x6wq19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417530/normal_5ff3f51883c9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383475/normal_601d3d9831657.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382412/normal_5fff6afed1dd6.pdfIn PDF document text
    • http://tezuveripoxub.mypressonline.com/a_wifes_story_summary_by_bharati_mukherjee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495037/normal_602d2960cce92.pdfIn PDF document text
    • http://lorenbayi.com/bekositizibilorofevejsvohk.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/xeponodij/80491282653.pdfIn PDF document text
    • http://kugukokoner.myartsonline.com/batarivojalulavaku.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/ripujux.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/tuberasamenatidajanana.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/58007931987.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/deadlift_form_breakdown_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/10015204157.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/classic_nursery_rhymes_lyrics.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_off0000e2e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E3 5260 bytes
SHA-256: ed04ae9b911edbba05176252ddfa7dcf4d652566f703b1d2ea54da770d9949b9
font_01_sfnt_off0000f4d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D8 10828 bytes
SHA-256: ebef07759b23de2b144807edf323b254da78b61dd9aa5c90253ad0c25ca41d19

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