Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d56519d3b98866b…

MALICIOUS

PDF

78.5 KB Created: 2020-12-30 03:01:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 171a4e5ffb87a030cce799d58faed5c6 SHA-1: 1c95838e4b33ccc8185c2e6eae8890bf67d5a978 SHA-256: 0d56519d3b98866bd68a749144d6957ff0b202c033bacda8cd6a141561fb685a
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

This PDF document contains numerous links to external websites, masquerading as download sources for games and other software. One of the primary links directs to a known malicious redirector, indicating a phishing or malware distribution attempt. The document also exhibits characteristics of a remote-support tool lure, suggesting the user is being tricked into installing potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://gettraff.ru/strik?utm_term=hay+day+game+download+for+pc+windows+7
    • https://static.s123-cdn-static.com/uploads/4490266/normal_5fcb9e79d2eaf.pdf
    • https://monemoret.weebly.com/uploads/1/3/4/6/134667898/25454b07a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/be16d16c-6d36-486e-ba97-5302ef1430ab/molarity_to_normality_naoh.pdf
    • https://s3.amazonaws.com/xuzed/pokemon_go_gps_joystick_apk.pdf
    • https://uploads.strikinglycdn.com/files/5da4413f-b795-4680-b1ce-4f119a0385bc/biwaxunufixikukebufo.pdf
    • https://uploads.strikinglycdn.com/files/bf32f26c-5a8d-4264-a31e-d7ad0647643c/bogukulakexe.pdf
    • https://s3.amazonaws.com/bodepova/duck_life_1_apk.pdf
    • https://s3.amazonaws.com/lakujusitejojet/30431167621.pdf
    • https://s3.amazonaws.com/jiwisi/le_dernier_jour_d_un_condamne.pdf
    • https://s3.amazonaws.com/serogajugomiji/kudovolulud.pdf
    • https://s3.amazonaws.com/temujonuwu/vuruwuwezerivigorogugopol.pdf
    • https://uploads.strikinglycdn.com/files/98d52cf6-bd64-460e-b80c-0d941191d01d/lumolurogikedoda.pdf
    • https://uploads.strikinglycdn.com/files/c35d39eb-f560-4b25-ad6d-afcffcd7590e/thomas_calculus_12th_edition_solution_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df58.bin
5205dc029b2d4b0ae44ddd8c96d056e1801b9f6b3c115db4e44038fa36e83b83		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF58 2940 bytes
font_01_sfnt_off0000e9e4.bin
a746d1655525751efb887c85a65d2642efdc8b1231d83e5fbf77f6ef24fb3d1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E4 5420 bytes
font_02_sfnt_off0000fc55.bin
844f6c091b4c7618b0770b6eb01d30719ff3ed8a6d3e5797e95b45074de73536		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC55 9888 bytes
font_03_sfnt_off00011e2f.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E2F 4324 bytes

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