Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e73b20b1566f43f…

MALICIOUS

PDF

75.8 KB Created: 2021-03-23 02:24:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06c31003a2166e71df60f4ab0b3b9118 SHA-1: ee4820e9828bddb48a0281178c07e1aea2dc1934 SHA-256: 7e73b20b1566f43f41fdede9ca8e4482397f359d197934442e3935861c31b44b
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/wix?keyword=la+charca+del+diablo+pdf
    • http://robugipunebib.mygamesonline.org/zogijoladufutof.pdf
    • http://ririzobe.medianewsonline.com/26133036390.pdf
    • http://tidirakozodawon.getenjoyment.net/schlage_code_lock_home_depot.pdf
    • http://sibatike.getenjoyment.net/ravpower_filehub_plus_apple_tv.pdf
    • https://bugevokugado.weebly.com/uploads/1/3/4/8/134870551/36acdef649afe1.pdf
    • http://pitikudefojeken.getenjoyment.net/psycho_book_bates_motel.pdf
    • http://letaraluzim.scienceontheweb.net/2020_andhra_pradesh_assembly_election_results_with_votes.pdf
    • http://wojisub.mypressonline.com/extraccion_de_aceites_esenciales_por_arrastre_de_vapor.pdf
    • https://cdn-cms.f-static.net/uploads/4444095/normal_5fd84d26702e2.pdf
    • https://mitivowa.weebly.com/uploads/1/3/1/6/131607237/zabuju-zukiwataxo.pdf
    • https://vematonejos.weebly.com/uploads/1/3/1/3/131383464/legiduforilisax_zelumawapo.pdf
    • https://fadabavawabup.weebly.com/uploads/1/3/4/0/134095990/d9db1d7932.pdf
    • https://cdn-cms.f-static.net/uploads/4449973/normal_5fd649595b037.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rabatelekovufar.myartsonline.com/sound_of_silence_sheet_music_free.pdf
    • https://s3.amazonaws.com/xajowu/credit_risk_management_textbook.pdf
    • https://s3.amazonaws.com/subopukomanaw/kewirixid.pdf
    • http://lufopudizomuv.atwebpages.com/what_are_the_characteristics_of_assets.pdf
    • https://s3.amazonaws.com/topipovikapari/zorofekug.pdf
    • http://moxuzaridob.onlinewebshop.net/lovadiparowubegefoxi.pdf
    • https://s3.amazonaws.com/tipikaxe/parallel_lines_and_their_angles_worksheet.pdf
    • http://lolunoxij.myartsonline.com/az_100_dumps_free.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e622.bin
3cdfae304c40b64a14656caf01a18d431f1c08d209a19411e7d24271df5a81a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE622 5144 bytes
font_01_sfnt_off0000f79a.bin
8f9847516bdb8d2da82ee065ef7f9fa5b3cb86952c9818c15f36d06f04aa2144		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF79A 12708 bytes

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