Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4febd23c6fb7fa0…

MALICIOUS

PDF

71.7 KB Created: 2021-01-09 18:35:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: de58dc62ceff7955b2e165d38d84472f SHA-1: b377b2d5387f01fc657c941bf0de643bf0b91440 SHA-256: e4febd23c6fb7fa070930932410f7be9d8c20dc8a6d498390ddf4a4a1551e486
104 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL and the document's presentation as a 'monthly expense sheet' suggest a phishing or social engineering attack aimed at tricking the user into downloading further malicious content. No scripts were extracted, but the presence of an external URI points to a download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/aws?utm_term=monthly+expense+sheet+household PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416327/normal_5f972ad679e03.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/Ogfjigx/1809367355.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/A7jehfD/21741095301.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386830/normal_5f8ccc1730c19.pdfIn PDF document text
    • https://cdn.sqhk.co/sirejeforox/b28jdES/absorption_spectra_of_photosynthetic_pigments_lab_report.pdfIn PDF document text
    • https://cdn.sqhk.co/fomavulobet/J2RVijk/wobep.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/gjhaGrp/jisusixuzokokoxij.pdfIn PDF document text
    • https://cdn.sqhk.co/tijinujul/mjdhfG5/ice_scream_3_horror_neighborhood_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4e059b2-2cfc-402c-886d-6f18f8440d80/55595354221.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfbc7ba1-0f31-437c-be7d-93b8cd879800/44682389842.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/945d3892-c707-46e9-ba74-56c826da0407/43153392330.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95f994af-4091-40f3-8790-ddd63c7ed211/71565033173.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_off0000dc14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC14 4916 bytes
SHA-256: 9ff01834844efe8deca3da4199c82f78d6d910349350a6e2dbb0b77d5628e64c
font_01_sfnt_off0000ece5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE5 10964 bytes
SHA-256: 1eb5a34815bc8f30e7bc2aadc76ee2de0c0c5be86555558e1f427343770e22e2

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