Malicious PDF — malware analysis report

Static analysis result for SHA-256 741b1bb6e1f459e1…

MALICIOUS

PDF

92.6 KB Created: 2021-03-16 18:57:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 48335b47561445ab86c4e6af00d20044 SHA-1: 5938f227fdfcf0d675fee23e24812e6bcd4a44b3 SHA-256: 741b1bb6e1f459e13f4f2b3d6aa39e47c72375f4c7026c289c2e9bd761ce21f6
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are part of a link farm, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to a compromised site for further exploitation or credential harvesting. The document body's content, though obfuscated, suggests a lure related to game hacking.

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
  • 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://baarspo.ru/wix?keyword=strike+force+heroes+2+hacked+unblocked+google+sites PDF link annotation
    • https://lovetikosinadup.weebly.com/uploads/1/3/4/5/134500291/4140659.pdfIn PDF document text
    • http://policyhelpcenter.com/georgia_driving_test_parallel_parking3n7kf.pdfIn PDF document text
    • http://vifijes.22web.org/behnein_aisi_hoti_hain_title_song.pdfIn PDF document text
    • http://pipvip.ru/blank_map_of_southeast_asia6vhiw.pdfIn PDF document text
    • http://jobs-ingenieur.best/wiworasutifijy45l.pdfIn PDF document text
    • http://indonesia2health.online/felimiwe3xesx.pdfIn PDF document text
    • https://lisubavami.weebly.com/uploads/1/3/4/3/134331762/goriva.pdfIn PDF document text
    • http://4gusevshop.website/pefukobojedidatibidirixo1z7qd.pdfIn PDF document text
    • http://wide-do.top/vorasokolozadudiromirisakbcimp.pdfIn PDF document text
    • https://bipipabogudas.weebly.com/uploads/1/3/1/1/131164499/nusabibakokot-ravebusaje-wudilogopofov-kavovuvupavi.pdfIn PDF document text
    • https://nukukenodaxuw.weebly.com/uploads/1/3/1/3/131384044/b9f1a5e.pdfIn PDF document text
    • http://bettyloustintruckbbq.com/70471051836uvv3t.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://valamujunitun.epizy.com/20366797573.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3637622-c7d3-452b-848f-d376744ade1d/wukuxawofirapogomirajabo.pdfIn PDF document text
    • https://76df98a8-3e94-4eee-a6f5-23e1de06049b.filesusr.com/ugd/54c74c_7464f572a3974e26a820c06006069301.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf9a1fcb-643c-4124-a259-f6292893aa9f/resumen_de_edipo_rey_por_capitulos_yahoo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf9af500-a919-4fec-91e9-13cbc8c45e7e/varberg_purcell_rigdon_calculus_9th_edition_solutions.pdfIn PDF document text
    • https://f770b3d7-c897-40e0-9323-5ad0abd91552.filesusr.com/ugd/1fa6dd_448e582466d04676a5f0cbd751985ecc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/306c01ff-fe36-4c9e-a784-f3eac6dd022a/pemagawisomemeli.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_off00012d42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D42 5724 bytes
SHA-256: d8935cec3cda0558ace0aadc41fac9b34b9e1826952280dd493f2bf0004796c0
font_01_sfnt_off000140bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140BB 10696 bytes
SHA-256: b99f2f860458bba4d588b39138416fd6b1274c2cf7d3113194dc3c5f641fe2d1

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