Malicious PDF — malware analysis report

Static analysis result for SHA-256 2692ff7c8b14a590…

MALICIOUS

PDF

75.3 KB Created: 2021-04-04 09:50:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 4626ac2eb81c37f6a11d5f75e4c4d31b SHA-1: c9834a2f7326e42d70ff87c324847cf1d440ff49 SHA-256: 2692ff7c8b14a590dfd4fcdeea58b8c0e9788dd2ac2a7d9b696da93844816b8f
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with at least one identified as a known malicious redirector. The document body, though partially corrupted, suggests a lure related to 'invitation card template psd free'. The presence of multiple disposable domains and link farms indicates a phishing or malware distribution campaign. No scripts were extracted, but the overall structure and URL analysis strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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 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.
  • 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://yafferge.ru/123?utm_term=invitation+card+template+psd+free In PDF document text
    • https://cdn.sqhk.co/vegubefeno/id0iisU/89176995699.pdfIn PDF document text
    • https://cdn.sqhk.co/tarolaser/jgieNjc/noleli.pdfIn PDF document text
    • https://cdn.sqhk.co/felolavap/fQEtbD1/nfl_network_app_roku.pdfIn PDF document text
    • http://form-lnstagramverificationbadge.com/dubitn932p.pdfIn PDF document text
    • http://grigolia-studio.ru/sapejefomibm6044.pdfIn PDF document text
    • http://bioforce-co.site/worksheet_math_grade_4_multiplication2mcgf.pdfIn PDF document text
    • http://glossywp.online/gate_mechanical_engineering_book_free_downloadexx0d.pdfIn PDF document text
    • http://nutupiwerumad.66ghz.com/vpn_server_free_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/vakolitakap/jdidtc6/xerinafaguxifipekumikogi.pdfIn PDF document text
    • http://beautytopshop.site/39596887175htgq7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ravuxigud.epizy.com/11555370103.pdfIn PDF document text
    • http://rudozanel.epizy.com/soxumamokaxalira.pdfIn PDF document text
    • http://lezaketego.epizy.com/sintesis_de_lipidos_en_la_celula.pdfIn PDF document text
    • http://fukurem.epizy.com/danowupowomusupedeful.pdfIn PDF document text
    • http://romesara.rf.gd/kakuro_and_killer_sudoku_cheat_sheet.pdfIn PDF document text
    • http://zikinevubebera.epizy.com/gosara.pdfIn PDF document text
    • http://wuwemeno.rf.gd/siwatukuf.pdfIn PDF document text
    • http://mawigugu.rf.gd/wupiturilorasi.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_off0000e84a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84A 5300 bytes
SHA-256: 10f935354f1184193b866e5d1d911c1cffc3f85b9c16104a06c481c9ed2067f1
font_01_sfnt_off0000fa42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA42 11172 bytes
SHA-256: 3b4594b824f1438672afec392530d51bcf6bcea4e998f02a3d3c7fa32f21a630

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