Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dedef554f216981…

MALICIOUS

PDF

91.1 KB Created: 2021-03-25 05:39:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa77d27606af68d159a656e548c1015a SHA-1: bede52654cf8f3d0c2f378722a372ef3c6e89aa2 SHA-256: 8dedef554f216981aa12efbd78a4c1de6b6c6cafb893c053895943dd31288412
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are likely part of a link farm designed to manipulate search engine results. The primary URL, https://jacksth.ru/wix?keyword=mm4+boss+order, suggests a lure related to an order, potentially for phishing or to download further malicious content. While no scripts were explicitly extracted, the PDF structure and extensive linking indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=mm4+boss+order
    • https://cdn.sqhk.co/sadirorig/ggfnHij/35607869206.pdf
    • http://pubggaming.online/reviews_on_groove_onn_wireless_earphones5d3tz.pdf
    • https://cdn.sqhk.co/virurewev/hcjiOQc/choppa_style_meaning.pdf
    • http://tryadasert.online/2593414763wqsjz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zumezeviwakiz/xijit.pdf
    • https://s3.amazonaws.com/patilawasu/whatsapp_app_for_pc_windows.pdf
    • https://s3.amazonaws.com/somamere/aegisub_windows_10.pdf
    • https://bf6af823-cb0d-4ee8-9d5b-4f0b1de5ed24.filesusr.com/ugd/9eb187_88cf19cd6ec64f0ebe68f7b6570f4c55.pdf?index=true
    • https://f459ab6e-ac57-43ce-b83a-1524846427e4.filesusr.com/ugd/938c70_ee2e00ede06a443491137b49133ba195.pdf?index=true
    • https://f7f2eb1f-4ce6-40bf-b337-6bcc2c9c1a95.filesusr.com/ugd/dc6899_5241e58f58534808b39aa3572168eee8.pdf?index=true
    • https://e21f0dd0-e693-4a2a-aa38-6cab66162128.filesusr.com/ugd/34eed6_a136a82aed0449f98edde59ceb006f5a.pdf?index=true
    • https://571cbd0a-ba82-408d-be6d-2df53a8fcfe5.filesusr.com/ugd/02af14_d14ec6a0b7b94e14ad48cbe8add02773.pdf?index=true
    • https://b6c9d0de-81a1-4db9-ab7d-8a95af9e63d6.filesusr.com/ugd/b28ae2_07d7606f54c949e4810f8407fbb2fbae.pdf?index=true
    • https://35479656-6a94-44d6-ac55-da507c14a2ae.filesusr.com/ugd/d68318_e8b2d977e22a4b009824329141368dd6.pdf?index=true
    • https://48bf584d-d56c-45cf-b4f3-c1c05dce5274.filesusr.com/ugd/3f4b99_39fcf4534a2948d19fa7326544df867c.pdf?index=true
    • https://3b044092-e341-4c69-a8e2-52b14fc1865f.filesusr.com/ugd/370021_292d49e9e74e454d95248b802d1795b0.pdf?index=true
    • https://s3.amazonaws.com/sazariwapa/pekewozapezimavekalowejiv.pdf
    • https://a181bb3e-7445-4f1f-a1cf-b2fe66c13e92.filesusr.com/ugd/91ce54_86deb70c24874198b49f4f1bf0755af6.pdf?index=true
    • https://ea74ff18-003d-4094-8454-8d7e15e33abb.filesusr.com/ugd/50de67_882a02a0485a4f27b8d2e1a36c9b04b7.pdf?index=true
    • https://7095e710-59ac-4d27-8a5a-f3bbcaf65deb.filesusr.com/ugd/418e76_98649f7162ee4d1fb826d5f58bad32e6.pdf?index=true
    • https://c02a3fa2-970f-4384-b4fa-7a60184a1b73.filesusr.com/ugd/1da3fe_029b1c3ab48349848e9f2f728694e8ad.pdf?index=true
    • https://8641c524-1fb5-4292-87ed-dd72f64d6c22.filesusr.com/ugd/9b7d8a_c2ee86c9d2fe4f0b974c2700f0a306f6.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001264a.bin
3d6c9396732cc9619723f4ad97649657b69ad4acd922569784724003aa670e0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1264A 4964 bytes
font_01_sfnt_off00013721.bin
00a8c5419db658a8b7a9f28671cf15f167c8b263ad9c6de176964bb4c72e2aa9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13721 11612 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.