Malicious PDF — malware analysis report

Static analysis result for SHA-256 bea9d7b04d6bfe88…

MALICIOUS

PDF

83.0 KB Created: 2021-03-29 15:21:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 7adbadfe4446c1fe58ad7b33a676f8b0 SHA-1: 6fb5659d818d029a0a9a1332b7dabc12a5628846 SHA-256: bea9d7b04d6bfe88c590bc97202d26b936ce84e94ccb6036592148deb8a31c11
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm or SEO poisoning tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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://ponafet.ru/award?keyword=changing+pdf+to+word+on+iphone PDF link annotation
    • https://moxisubisoxotap.weebly.com/uploads/1/3/4/8/134893280/kelarisobij.pdfIn PDF document text
    • https://cdn.sqhk.co/bodegife/yRhg1hf/85928861963.pdfIn PDF document text
    • https://galifejamadex.weebly.com/uploads/1/3/0/8/130814644/sajozi.pdfIn PDF document text
    • http://ig-soft-team.com/how_to_read_data_from_excel_sheet_using_c_interop3n4ey.pdfIn PDF document text
    • http://jarizodej.22web.org/free_clipart_scroll_border_template.pdfIn PDF document text
    • https://cdn.sqhk.co/naxusepimosa/jv931uq/53867941021.pdfIn PDF document text
    • https://cdn.sqhk.co/jipobuxaza/agdhdjf/impossible_game_theme_song.pdfIn PDF document text
    • https://jeduwenerapowi.weebly.com/uploads/1/3/4/6/134678879/towuxinobub.pdfIn PDF document text
    • http://cabinetsly.xyz/34442505303jivng.pdfIn PDF document text
    • http://forpost-electrica.ru/gotuvijexaporivemawatnfg48.pdfIn PDF document text
    • http://normaa-id.com/libro_de_algebra_de_baldor_completo_para_descargar_gratis1ktfe.pdfIn PDF document text
    • http://fibutogu.mywebcommunity.org/58003209101.pdfIn PDF document text
    • https://toxazuna.weebly.com/uploads/1/3/0/9/130969920/5e3a656638b182.pdfIn PDF document text
    • http://mifirejetevina.getenjoyment.net/44326590254.pdfIn PDF document text
    • https://cdn.sqhk.co/pemejurove/iehfXge/vuzigawopekebesimafub.pdfIn PDF document text
    • http://xafukuxovikovu.22web.org/59272245775.pdfIn PDF document text
    • http://wudazex.sportsontheweb.net/8599329166.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/haLicgi/sogafamixezapam.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://973697ad-ffa4-4f9d-85cd-0c9d1ea039ee.filesusr.com/ugd/5f5755_130c675d77a74fa291810e0b5f6bacbf.pdf?index=trueIn PDF document text
    • https://538d8494-0c7d-401a-b890-0485f6bc7bca.filesusr.com/ugd/29c71c_516e9b1f98194414bd6a556f85a432c0.pdf?index=trueIn PDF document text
    • http://newikajoz.rf.gd/accounting_period_definition.pdfIn PDF document text
    • https://d7ae471b-a447-437d-81b4-4e603f8679d9.filesusr.com/ugd/0a3240_7e95a38644954aa1a544dca6bce69e50.pdf?index=trueIn PDF document text
    • https://0404cab7-c021-4537-be79-420bcb2f88cc.filesusr.com/ugd/52c240_7d08ae08c7c44496b8344af508cf30b1.pdf?index=trueIn PDF document text
    • http://kikanelomer.onlinewebshop.net/zayn_malik_book_espaol.pdfIn PDF document text
    • https://0621cc9e-6449-4e8a-a8bd-baee9ad62a2c.filesusr.com/ugd/affb4a_f312fff3251543cb9c2de983bf343f58.pdf?index=trueIn PDF document text
    • http://rabazefobozaxa.epizy.com/94385631040.pdfIn PDF document text
    • http://jumebesatupa.epizy.com/runepomigiwonu.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_off00010514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10514 5088 bytes
SHA-256: eacbdb272844630c89ab3680e7fd32fe5132a7d32e90bb5d66c6401e460dbbf1
font_01_sfnt_off00011670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11670 11596 bytes
SHA-256: ce62a3361fb65c87eb00179cb09042a05ebf97e1cce57446a2a86a72dc613166