Malicious PDF — malware analysis report

Static analysis result for SHA-256 972d2e847f139d68…

MALICIOUS

PDF

71.4 KB Created: 2020-11-20 14:26:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e6bd9936d7ef955b4a3ccf862cbc37df SHA-1: 17ad9ede9bb677c01c49ad7aa8cf0ee91f9f9a9a SHA-256: 972d2e847f139d6841390095979b2a10ef2a4cd807de8fce7bd6b9a2b495ed7b
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafficel.ru', which is likely part of a phishing or malware distribution scheme. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/strik?utm_term=communicative+language+teaching+principles PDF link annotation
    • https://nakumupapetiz.weebly.com/uploads/1/3/2/7/132741615/559e6419.pdfIn PDF document text
    • https://famotufenimuz.weebly.com/uploads/1/3/4/1/134132127/nudifap-zonorimobipe-sivevujizur-weketopoka.pdfIn PDF document text
    • https://sinonulu.weebly.com/uploads/1/3/4/6/134654736/53ffa1a4.pdfIn PDF document text
    • https://wakutoji.weebly.com/uploads/1/3/4/3/134314583/106804.pdfIn PDF document text
    • https://rugitaroginuwim.weebly.com/uploads/1/3/4/7/134768051/vumezu-nigodegeriji.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/mijedusovineti/62692535614.pdfIn PDF document text
    • https://s3.amazonaws.com/tagorarib/west_islip_estste_sales.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/jajoxufujasirazododijunap.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/pogaga.pdfIn PDF document text
    • https://s3.amazonaws.com/tifemuma/entropia_universe_beginner_crafting_guide.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_off0000db88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB88 5312 bytes
SHA-256: 1422ab3123bf6d30ae9424d3d0e19b4705b5ea22da6d2a15885cffab23da9a4d
font_01_sfnt_off0000ed6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6D 10508 bytes
SHA-256: 939117f64ceda86af314bd9d9a3b4c33d4d8f32bbab50f748933c5df4871ac21

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