Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea4964ae18e94f82…

MALICIOUS

PDF

79.0 KB Created: 2021-03-08 20:49:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: ff4780958e4e6a9b9ea543de32cef401 SHA-1: b75ed55460de6161ede11893c9943c24ff692264 SHA-256: ea4964ae18e94f82c384fa16ce6938a5ba7ca3249a614ef907b91e7b31bd5c34
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is a PDF document that contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains references to 'powerpoint venn diagram template free' and 'wkhtmltopdf', indicating a lure to disguise the malicious links.

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacksth.ru/123?utm_term=powerpoint+venn+diagram+template+free PDF link annotation
    • http://koxelovanalimu.getenjoyment.net/ganamrutha_bodhini_sangeetha_bala_padam_book.pdfIn PDF document text
    • https://tofujifudaxibav.weebly.com/uploads/1/3/5/3/135326414/raburerazude_xarus_fozaz.pdfIn PDF document text
    • https://luvodufugatese.weebly.com/uploads/1/3/4/8/134893210/lemimanurud.pdfIn PDF document text
    • http://onlinesos.tech/battleship_potemkin_movie_reviewz188w.pdfIn PDF document text
    • http://ziwewixowele.sportsontheweb.net/chronicle_of_a_death_foretold_chapter_2_quotes.pdfIn PDF document text
    • http://teasmall.space/12009686711bhj4f.pdfIn PDF document text
    • https://tetoferapijala.weebly.com/uploads/1/3/1/6/131606168/fajumos_vamojen.pdfIn PDF document text
    • http://rawenspant.online/forex_technical_analysis_for_dummiesv137m.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/anti_human_trafficking_organizations_austin_tx.pdfIn PDF document text
    • http://zipafaxelati.sportsontheweb.net/jejupewazofakawozo.pdfIn PDF document text
    • http://daddytestit.xyz/shopping_wishlist_app_iphonefxa4i.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/lizijufadeliwejoxuzakif.pdfIn PDF document text
    • https://deponoma.weebly.com/uploads/1/3/2/6/132696267/8067176.pdfIn PDF document text
    • http://wapividazofar.scienceontheweb.net/wireless_headphones_for_my_lg_smart_tv.pdfIn PDF document text
    • http://bellissimo.online/132626123xv7xn.pdfIn PDF document text
    • http://reliables.ru/metodologia_de_la_investigacion_conocimientotv5rl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zewadomi.myartsonline.com/52322972459.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/93820061835.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/7795686246.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/blackmail_odia_movie_all_original_song.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_off0000f7a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A7 5336 bytes
SHA-256: e57a1036b3e9b2f6f5d5d49e6fcb5d1e7cd08cfc74e89da3a972e028eaa24d7d
font_01_sfnt_off000109d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D7 10900 bytes
SHA-256: d99f691830fca29f0ee307d0dc90b469774c8c1481c8f5231ea3c8566fb6def7

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