Malicious PDF — malware analysis report

Static analysis result for SHA-256 1afd5a1f75b261d1…

MALICIOUS

PDF

70.1 KB Created: 2021-02-21 13:24:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 8804a8c3918f0554ddf89646d9e50677 SHA-1: 9f83df0b9a3dd9136c569ed6f31e8a3ce9ad7fd8 SHA-256: 1afd5a1f75b261d14bdafca56eacecf1fdde92db2b1f6a5a7ad9957ac48d4ebb
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://bologen.ru/wix?keyword=pixel+strike+3d+mod+apk+8.2.0, suggests a lure for downloading potentially unwanted or malicious software, masquerading as a game mod. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution 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://bologen.ru/wix?keyword=pixel+strike+3d+mod+apk+8.2.0 PDF link annotation
    • http://vetokikiw.22web.org/13693971775.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470412/normal_5fce506c027ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389108/normal_5ff0b1386dbcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446399/normal_5fd2d3e073e29.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvukidovime/sWhfTVe/jusaz.pdfIn PDF document text
    • http://lnstagram-blue-ticks.com/58963813241o3sa0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478932/normal_601610c260600.pdfIn PDF document text
    • https://cdn.sqhk.co/jasojime/5PivdxL/apk_one_epic_knight_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483083/normal_602fa607d52e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409246/normal_5fea2a510ad98.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/hiTgcgj/guribegamupe.pdfIn PDF document text
    • https://cdn.sqhk.co/nilesatu/fPzXgi4/super_mario_run_mod_apk_download_for_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484093/normal_6001b921bd6b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482189/normal_601323f2e9d82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467950/normal_5fc6ff4a8a377.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ratimoli.epizy.com/29400873622.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_off0000d28d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD28D 5904 bytes
SHA-256: d7d912aef4b24fa9990c8de8340f15cb9af5eeaa11e7439145d1cff1f1b50e0d
font_01_sfnt_off0000e68f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE68F 10820 bytes
SHA-256: 2e9a3ee67ad4471a562033f62fecc16dffd67df16014557b7e70f48f648d5c2e

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