Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd2c8675856e79db…

MALICIOUS

PDF

86.4 KB Created: 2021-05-15 00:43:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: e57b0ba5b7c6783da0bbf867f0dacf5c SHA-1: c8eed70611b501b0948d241c75fc6ac4d8dabed7 SHA-256: bd2c8675856e79dbeffdf95a8692598fbb320a48c133d76db7594a3232b3bca8
96 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 embedded URLs, one of which, 'https://ponafet.ru/strik?utm_term=weber+smokey+mountain+22.5-inch+charcoal+cooker+smoker', appears to be a lure for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to redirect users to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=weber+smokey+mountain+22.5-inch+charcoal+cooker+smoker PDF link annotation
    • http://xivazokib.medianewsonline.com/pollution_in_mumbai_city_causes_and_effects.pdfIn PDF document text
    • http://rasudilikid.mywebcommunity.org/scribus_tutorial_espaol.pdfIn PDF document text
    • http://kutegexuwudaro.getenjoyment.net/the_assassination_of_jesse_james_book.pdfIn PDF document text
    • http://tuvoreda.scienceontheweb.net/bsp_thread_chart.pdfIn PDF document text
    • http://zesaguzijor.mypressonline.com/femur_fracture_classification.pdfIn PDF document text
    • http://befotuke.mywebcommunity.org/nizodaduwinitix.pdfIn PDF document text
    • http://tuwasukam.getenjoyment.net/43795669020.pdfIn PDF document text
    • http://fejekadiwoxobiz.getenjoyment.net/28717076833.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xakusineba/basexawopolofafomijatu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25b33e00-fda4-479d-86dd-3f0c789d7a42/sanemigirovidawodatenibi.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/18955300167.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/dujur.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/mijefinolakubibowi.pdfIn PDF document text
    • http://zerowegujij.onlinewebshop.net/89019579003.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/prayers_for_9_days_after_death.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/word_award_certificate_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/lg_g_pad_f_8.0_wont_turn_on.pdfIn PDF document text
    • http://fajenadiwizowo.atwebpages.com/honda_eu2000i_spark_plug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/291b4809-b424-45a1-857e-39df19c2e038/gimipalavof.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_off0001109c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1109C 5680 bytes
SHA-256: 2834d9602e3e48ed304564b4fc20823073728d28ee96a8e62a11eaac5485777a
font_01_sfnt_off000123ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123EF 11952 bytes
SHA-256: 07eb9fd553330db27cbb98dca1dc80137e35d1db28a95717456af38f8ecebcbb

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