Malicious PDF — malware analysis report

Static analysis result for SHA-256 69850a6dd55576a5…

MALICIOUS

PDF

76.1 KB Created: 2021-03-01 06:54:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: afd972bbfe59b43621265bdea3d1940d SHA-1: d283f2f50377d4e9b7746870998450114a6f457b SHA-256: 69850a6dd55576a5ef4b9d61a275e37ee7e78754ed87935fbdf695993afd6822
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, one of which is directly referenced in the document's metadata, suggesting a lure to download further malicious content. The presence of PDF-specific heuristics and the overall structure point towards a phishing or malware distribution campaign.

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://soxebez.ru/123?utm_term=ged+mathematical+reasoning+practice+test+pdf PDF link annotation
    • https://cdn.sqhk.co/dukoredod/IBhfcgh/43562946189.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/hdigJ9X/jiruve.pdfIn PDF document text
    • http://ovca.space/157648871050581.pdfIn PDF document text
    • https://cdn.sqhk.co/ragekasa/dgNKi0P/natasa.pdfIn PDF document text
    • http://genusadnlo.space/how_to_reset_a_slingbox_500lodat.pdfIn PDF document text
    • https://cdn.sqhk.co/nogedapuvul/he0Q0ie/jasaf.pdfIn PDF document text
    • https://cdn.sqhk.co/vonezositixi/a9B1iiU/how_to_use_voico_uae_application.pdfIn PDF document text
    • https://cdn.sqhk.co/zedazisem/eYNig8K/gazunizetov.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/hIzBnor/31629847095.pdfIn PDF document text
    • http://xelibirujegid.mywebcommunity.org/monster_vape_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/lufezeralon/iaUZhf0/tibiru.pdfIn PDF document text
    • http://itawegan.space/pefewuvafawekr293.pdfIn PDF document text
    • http://newberginvestmentproperty.com/2611869753hkg03.pdfIn PDF document text
    • https://cdn.sqhk.co/lelogusobade/Aiiidhu/keruwab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xifetofaramil.rf.gd/xibunitigamafe.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_off0000ea65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA65 5600 bytes
SHA-256: 3df47f70236adc21f0711135ff0f9156b68375be9be24bf93fd92bda772e0e64
font_01_sfnt_off0000fd44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD44 11300 bytes
SHA-256: a5396a2477d3d6bcb1f9c08844e9b21a72f8519970b5b730a4ec6653b01cb69d