Malicious PDF — malware analysis report

Static analysis result for SHA-256 b500376b731c6117…

MALICIOUS

PDF

70.9 KB Created: 2020-12-31 06:41:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0c2d7a1a9eb41ee04c91eaa3e0b3392b SHA-1: 15d09701331b4a4294229233413ee345ab6ea978 SHA-256: b500376b731c6117dc608fee2c0b2ac1c231510e51ead3eef2464e6e19b4ebb4
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely intended to deliver a malicious payload or redirect the user to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, references 'Age of ottoman apk mod', suggesting a lure to download potentially harmful software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/strik?utm_term=age+of+ottoman+apk+mod PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413110/normal_5fcc75a59fd5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368493/normal_5f8d8d3528a42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385012/normal_5fc22de88fb6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481831/normal_5fa7f016b4fa5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447497/normal_5fcbf393e76dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459324/normal_5fbacfae1e8b6.pdfIn PDF document text
    • https://cdn.sqhk.co/gabisolovima/503gigf/battleground_survival_mod_apk_unlimited_money.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/ggZjUgi/3d_driving_class_mod_apk.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/rovikibixu/red_birds_in_maryland.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbf27fc5-f846-4f4d-85c3-b066d4708bfc/gakuzuvesukedepuxikokitir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1353c9a5-f308-4e11-82c1-c821a7b03173/tiditij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e56cbd22-72af-4273-a60d-17e12f0a1423/vekutexusokuwisogonuf.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_off0000d7a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A5 5108 bytes
SHA-256: 359b4cffb88e977a6695c0f7e94d5bb9882beaaba8bf220ec23188577bb18a17
font_01_sfnt_off0000e904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE904 11112 bytes
SHA-256: 03ac9383f027ce40606c352ead352c5850548b2ca8952590f4dff0b32cc0f552