Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c95072cd59ba3fd…

MALICIOUS

PDF

75.6 KB Created: 2021-03-23 13:30:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: cd3f86caa620c1efceccaa7e94626d67 SHA-1: ce5570c363bc16128b1dd76a1642753699e89a55 SHA-256: 8c95072cd59ba3fdd5c88a9f079eeb9e965d293e93d06e9fa379271141ebcdbf
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many pointing to disposable hosting services, suggesting a link farm or phishing operation. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics strongly indicate malicious intent. The document body, though heavily obfuscated, contains text fragments related to 'Platform ajay devgan movie video', which is likely a lure to attract users to the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://fokemale.ru/123?utm_term=platform+ajay+devgan+movie+video PDF link annotation
    • https://cdn.sqhk.co/vuzilogabuwu/btjd9lf/adestramento_de_ces_filhotes.pdfIn PDF document text
    • https://lelopotive.weebly.com/uploads/1/3/0/7/130738546/d6fd74233b0b63.pdfIn PDF document text
    • http://gasufulezexe.22web.org/twilight_saga_eclipse_book.pdfIn PDF document text
    • http://nesejanemik.22web.org/building_construction_drawing.pdfIn PDF document text
    • https://pemesekisubabas.weebly.com/uploads/1/3/4/6/134659876/sexixosusagif_mupejuwidof_pezas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529977/normal_6043198095589.pdfIn PDF document text
    • https://cdn.sqhk.co/dedenijikal/hehhdj6/flashlight_on_iphone_11_keeps_coming_on.pdfIn PDF document text
    • https://cdn.sqhk.co/wirubetena/fibjghh/cookie_clicker_3_unblocked.pdfIn PDF document text
    • http://kvadro63.ru/how_to_replace_delta_single_handle_shower_cartridgetshdu.pdfIn PDF document text
    • http://tiktoktop.design/49784661262qb80q.pdfIn PDF document text
    • https://cdn.sqhk.co/jesarijufe/8kgeDhc/kevikilugufovepuzexigu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450721/normal_5fe3a605cebb3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://952d9f4b-853a-4e85-af28-23c4d489d487.filesusr.com/ugd/8db125_174f72ffd1cf464da26a13c887d7a7d0.pdf?index=trueIn PDF document text
    • http://tedizixulore.epizy.com/24852923394.pdfIn PDF document text
    • https://5d9de69b-f80b-44d6-9c2d-9027806fef0b.filesusr.com/ugd/e26ad2_d0dcb6cd579541eea942a58e4644d03b.pdf?index=trueIn PDF document text
    • https://db6d201d-bdff-4648-9982-d9cfaac7639e.filesusr.com/ugd/98857b_554943739cf24e169da25700438337fa.pdf?index=trueIn PDF document text
    • http://tatatomoti.rf.gd/bankers_adda_descriptive_capsule_free_download.pdfIn PDF document text
    • https://e114ad41-1367-46fe-a5fd-427bf640f69d.filesusr.com/ugd/a63c55_3bebb255361341f8843ed58f1252fe95.pdf?index=trueIn 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_off0000eb3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3F 5288 bytes
SHA-256: b73a0a0895e7139b10c4cb12d4c187fec133ec882ce2c34dd0f801e060ae1c31
font_01_sfnt_off0000fd42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD42 10824 bytes
SHA-256: 0d53c0d69c87e02cc72d7d5946622c5e694e4913c3da28743d42058f6c6a63cf

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