Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dce79e4a0e68716…

MALICIOUS

PDF

115.5 KB Created: 2021-03-24 00:34:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: b03f374b687313c9742f7649c08ca51f SHA-1: 4a09735287b4873b7dd32f525e4001f9d5bc156b SHA-256: 8dce79e4a0e6871684d16ea1186cbbd4104590d6f859059cdf2fa3a1961ed727
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous external URIs, with a primary suspicious URL being https://ponafet.ru/strik. The document body, though heavily obfuscated, suggests a lure related to religious text, likely to trick users into visiting the malicious links. No scripts were extracted, but the PDF structure and numerous links point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://ponafet.ru/strik?utm_term=istikhara+ki+dua+with+translation PDF link annotation
    • http://dombitarf.ru/31836199571m87mr.pdfIn PDF document text
    • http://ejinaya.com/93340902728ls56v.pdfIn PDF document text
    • https://zesalogerevuj.weebly.com/uploads/1/3/4/6/134684883/rudefuzuxezas-davofifosija-fuligorisebe.pdfIn PDF document text
    • https://bizitaninajoki.weebly.com/uploads/1/3/5/3/135316521/vovolilivekijof.pdfIn PDF document text
    • http://sibuvre.com/biker_mice_from_mars_2006_episode_2d61ku.pdfIn PDF document text
    • https://wunobenera.weebly.com/uploads/1/3/4/8/134887230/fotigelajiresetolo.pdfIn PDF document text
    • http://neo-tp.ru/nujivalolu13we3.pdfIn PDF document text
    • https://cdn.sqhk.co/lojadisexudo/qrjeItA/blue_moo_ice_cream_truck_brooklyn_park_mn.pdfIn PDF document text
    • https://fepexugoroba.weebly.com/uploads/1/3/4/4/134469665/wubudanefumu-lubozexu-gawikotisedan.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/idCsjaB/billie_eilish_my_future_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/zojixemem/G4gchde/balaxowopajosefebavubaxo.pdfIn PDF document text
    • http://zegobudipaju.mywebcommunity.org/pdf_converter_to_word_document_free_download.pdfIn PDF document text
    • http://fringigejy.site/1070003388plzdz.pdfIn PDF document text
    • https://cdn.sqhk.co/jezaziritav/jzyGKjg/fly_high_little_birdie.pdfIn PDF document text
    • http://dorugatutaxovi.scienceontheweb.net/deforestation_in_the_philippines.pdfIn PDF document text
    • https://cdn.sqhk.co/lexaxemiji/ujdvif8/6749495731.pdfIn PDF document text
    • https://wisamifogafize.weebly.com/uploads/1/3/4/5/134598642/nepuwamat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a0453bf-6a0a-4b37-9b3c-27ee30364b93/2006_ktm_450_exc_owners_manual.pdfIn PDF document text
    • http://norabasuluvo.rf.gd/pumagaparu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dddf0418-fbf8-45c8-b26b-d765efffa87b/greek_tragedy_antigone_ismene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4aa9e26-d5b2-431c-9ee8-72edf531bb4f/1663187173.pdfIn PDF document text
    • http://kixixiwibatogit.epizy.com/av_converter_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62f4db72-44a0-440d-96cc-1cfcfd1e9c36/julogonapenofanesata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b34ac87f-22f3-4370-b645-1aa3012a1fb3/30567182378.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0001689b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1689B 30360 bytes
SHA-256: 2f2c38aa5a0ef9f521bf75067197c87d4522d48e0d9c1b740b18356b2c9aa3a7
font_00_sfnt_off000131e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131E3 5008 bytes
SHA-256: 8534b38ad5f3d195ce3cefc16c607ce54f4f5fbf9e8e2091ee50f4b02b7af4dc
font_01_sfnt_off000142f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142F5 11000 bytes
SHA-256: 05cd3bd13c60d63ecd46191b46cb6667d603c5f0b4dc61bebc8b69fbc49ac328
font_03_sfnt_off00019d50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19D50 11760 bytes
SHA-256: f7f53f8a04fd27a3c497d6a24bb7341ef4bf52cfaee0adfc32ca56ccd7fb7b58

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