Malicious PDF — malware analysis report

Static analysis result for SHA-256 fca5deb2020d2492…

MALICIOUS

PDF

94.3 KB Created: 2021-03-13 12:46:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 3c940378421fd3e195ff748e9ec281a8 SHA-1: 39974faa947395dc30d784090e12cb4ead3a38db SHA-256: fca5deb2020d2492853d595d8dd7a847c541fb72f7df0401a6bf3550430c23b6
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, 'resalured.ru', which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, suggests a lure related to 'power leveling guides', indicating a social engineering attempt to direct users to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://resalured.ru/wix?keyword=wow+power+leveling+guide PDF link annotation
    • http://befigter.xyz/zaxupekudegide2ot7q.pdfIn PDF document text
    • http://technodom11.com/to_answer_someone_back_meaning5liq2.pdfIn PDF document text
    • http://jubobusuzamap.22web.org/liftmaster_8365_cost.pdfIn PDF document text
    • http://graatorama.space/nukurezorivabnkvi.pdfIn PDF document text
    • http://gedawuxofawu.iblogger.org/candy_a_5001_manuale.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/443d6c44-532c-41fc-bab9-60ef8d464ca0/lo_que_no_te_mata_te_hace_mas_fuerte_en_ingles.pdfIn PDF document text
    • http://lugipivimefol.epizy.com/4792804021.pdfIn PDF document text
    • https://8772a198-af03-49ef-8724-5feb7546cb8a.filesusr.com/ugd/436f04_def04cd77cea463f9b32cff4744c1847.pdf?index=trueIn PDF document text
    • https://52c77544-2eb8-427c-ad0e-a8a7e2ea9366.filesusr.com/ugd/93288f_edf5fd32977a477a941765e68fb719dd.pdf?index=trueIn PDF document text
    • http://fisuzes.epizy.com/boruit_headlamp_rj_3000_parts.pdfIn PDF document text
    • http://purumurik.epizy.com/50775904237.pdfIn PDF document text
    • http://norilonabu.epizy.com/how_to_add_disney_plus_to_samsung_blu_ray_player.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/xaretumidimef.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/how_to_open_ms_paint_shortcut_key.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/bozorudurusinipeseba.pdfIn PDF document text
    • http://dubexejevobogi.rf.gd/gejajowotujun.pdfIn PDF document text
    • https://09ec9d85-9312-4337-94d0-b84080e05f2e.filesusr.com/ugd/ac0094_6cb559554fb94bcfbb369ae6ffe1901c.pdf?index=trueIn PDF document text
    • http://gezupipul.rf.gd/solitejaravote.pdfIn PDF document text
    • https://9e269ae7-c3cf-4b9f-bde2-1d9be064b7bf.filesusr.com/ugd/139869_62f7871aaefd4a4c930cd1a30db66864.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/461df050-486e-4d26-93ee-778408780611/9593916727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f65781d-5e7b-452a-8f40-cbae407ef245/41528426021.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D0B 4904 bytes
SHA-256: 7ef1af97420ed288e7db7f53c71369bed1a5a15315391e1c1b1bff19e541e7bd
font_01_sfnt_off00012de9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DE9 11156 bytes
SHA-256: 3ca2839d3911a414893a4994d481c5b5cedf1ed1da4714f82e9490bb4be14a06
font_02_sfnt_off0001545f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1545F 16312 bytes
SHA-256: aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0

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