Malicious PDF — malware analysis report

Static analysis result for SHA-256 63fc8ebcdaf37b64…

MALICIOUS

PDF

74.8 KB Created: 2021-02-18 01:01:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 86f5e46a581b6e0e1d96d3dcfd7937ad SHA-1: 7a3b3c91da4a83b8335b44d678f173e809202fdb SHA-256: 63fc8ebcdaf37b641702da711d1c97330ccc986abb5006981864f26573453b48
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan payload. It contains external URIs and embedded URLs pointing to potentially malicious content, suggesting an attempt to redirect the user to a download site. The presence of a visual download button further supports a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://jottigo.ru/123?utm_term=all+american+pressure+canner+925+parts PDF link annotation
    • https://ruxabetuju.weebly.com/uploads/1/3/2/7/132740595/284171.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421330/normal_6023d237a0250.pdfIn PDF document text
    • https://fexiganariv.weebly.com/uploads/1/3/0/7/130739648/lipaxuxa_lekuxofizi.pdfIn PDF document text
    • http://shopwithsale.website/zufajesefoza7a0me.pdfIn PDF document text
    • https://funesovikigaje.weebly.com/uploads/1/3/0/7/130740183/nemit_sotilafo.pdfIn PDF document text
    • http://apparentlyopt.com/lilanasanunikefcqpo4.pdfIn PDF document text
    • http://rostov-mobile-doctor.ru/39728596284oiy0o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413474/normal_602c6269cff61.pdfIn PDF document text
    • https://guxofoxevi.weebly.com/uploads/1/3/4/7/134737998/mazuselunanol.pdfIn PDF document text
    • http://instapriz365.site/848658143052zduu.pdfIn PDF document text
    • http://scandisvet.ru/diode_1n4007_mic_datasheetqobz7.pdfIn PDF document text
    • https://gogesatita.weebly.com/uploads/1/3/4/3/134321397/jebekow-nekasi-runigenewe.pdfIn PDF document text
    • http://shop-profildoors.ru/49733264008tevgq.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/sorogamat/dingle_peninsula_travel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/62658872528.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/calligraphy_handwriting_practice.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/wolupatewenuradijajem.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_off0000e517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE517 5480 bytes
SHA-256: 80779bf591b671bae335b70466599c7e6b69ccd054812fdf5d761292ebaa88ba
font_01_sfnt_off0000f79e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79E 11860 bytes
SHA-256: 4e692e9d4ea71316f53c2fa61bbd51504af13c3195a69163208989cc22a9315f

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