Malicious PDF — malware analysis report

Static analysis result for SHA-256 3896cd2a44677dd5…

MALICIOUS

PDF

77.6 KB Created: 2021-03-06 04:01:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 5d53714f597a679656ee0fbfd94be48a SHA-1: 2299dc1f64a048be678cb8f01c3a42683a07dbfb SHA-256: 3896cd2a44677dd5a12958440bc1743c3309972c85ec43da27b2f4aa01fac011
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded malicious URL point towards a phishing lure disguised as information about writing a diversity statement.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=how+do+you+write+a+diversity+statement In PDF document text
    • http://dimozakebaba.scienceontheweb.net/49507620057.pdfIn PDF document text
    • http://lavka-karamel.ru/sonata_service_center_near_me8giup.pdfIn PDF document text
    • http://rukozhop-guide.com/14904594770425vv.pdfIn PDF document text
    • http://infonewstravel.com/arthashastra_book_in_marathi_free_download486t4.pdfIn PDF document text
    • http://uabiomanix.xyz/keurig_single_cup_operating_instructions24e4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369514/normal_6032075b0a463.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447497/normal_603e089858750.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374535/normal_60241aa2b7175.pdfIn PDF document text
    • http://reweder.site/wagonokatapinikuva5ijry.pdfIn PDF document text
    • http://tapozifokun.mywebcommunity.org/how_to_setup_ge_4_device_universal_remote.pdfIn PDF document text
    • http://goodnatural.space/composite_materials_in_aerospace_industryn50b5.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/napoledunadigo/bonuzekofutuxe.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/tebalixasi.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/5003356293.pdfIn PDF document text
    • http://tuzuxutetug.atwebpages.com/what_is_exception_processing_message.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/kisangates_agro_informatics_pvt._ltd.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/kegifaxu.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/admob_google_forms.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_off0000f2fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FD 5156 bytes
SHA-256: f7c9adb49d1a2fca02f01f213eb897bd24c3c4c075eaf089dd0297c37e1ef970
font_01_sfnt_off00010486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10486 10924 bytes
SHA-256: fceffc985d233880d8fe3ed735c89ef6c4c8d621dc431412e213104f9ed5b2ea

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