Malicious PDF — malware analysis report

Static analysis result for SHA-256 89bc179569bc3cb3…

MALICIOUS

PDF

77.4 KB Created: 2020-12-31 12:42:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 019ce3a261d6c86dec6a7315b5deeffb SHA-1: 74f338e03fe4b0273cdbf6a343d7f449cd021f32 SHA-256: 89bc179569bc3cb390ccacca2e7c2600a2035a77d580486f00dc2cf56c9f4757
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffine.ru'. This URL is presented in the context of a 'livestream app android tv' lure, suggesting a phishing attempt to redirect users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

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
  • 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.
  • 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://traffine.ru/strik?utm_term=livestream+app+android+tv In PDF document text
    • https://cdn.sqhk.co/goluxewimabu/epyigZC/99148340984.pdfIn PDF document text
    • https://cdn.sqhk.co/zozijawutuxu/hLhibOg/weekly_ads_safeway.pdfIn PDF document text
    • https://cdn.sqhk.co/jasowipe/Hxpggjd/commuter_benefits_nyc_login.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/gdhf9kT/dj_loop_pads_mod_apk_3._9._0.pdfIn PDF document text
    • https://cdn.sqhk.co/fumazuri/gcEicic/xetivatopadiso.pdfIn PDF document text
    • https://cdn.sqhk.co/seponidozit/dsEiain/6209133539.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/joEjgrK/19682724286.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/ed1e25c8-b3d3-4253-9adb-b438bfe1bc14/dopugalukajizinumapowabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8bbf632-20a4-49e8-b634-abc022be0005/vufipagebozibesenajurib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/601f5ebb-6ff2-4727-ae30-dea0195bd361/flower_structure_and_reproduction_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e03eed00-afd7-41f1-9ea2-4b32acb5dc4d/zetovunuxed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c60ccda-12f0-4513-93a4-b05e041e38ee/turinozovibosuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f11ed63c-4ae0-4ddb-887a-837dec5a4d0e/60541345308.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19f813d1-0931-45d0-b530-b069a535156c/at_t_visual_voicemail_not_working.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE654 4860 bytes
SHA-256: 57a28e672e3036f639378024d978fb165e3227242a83904d29b6e832442fc320
font_01_sfnt_off0000f6be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BE 10680 bytes
SHA-256: 3622705d8f6a071c98308fefcb168c2da76c7f1e4447c3f698a3b8c053c15d77
font_02_sfnt_off00011b15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B15 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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