Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d243eb1914e3dd…

MALICIOUS

PDF

81.8 KB Created: 2020-12-30 07:09:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0070ed048fbb2e962c55db560023fd5b SHA-1: e62cafa20cd4b22392ddac851f79a30102505357 SHA-256: 26d243eb1914e3ddd227a9e71385be4c7eaa1f09bab2923481584863a35d9554
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of a malicious URL in the document's context suggests a social engineering attack.

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://trafficel.ru/strik?utm_term=nerf+gun+zombie+strike+chainsaw PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444657/normal_5fb2d6bf84a11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449627/normal_5fbf3f833898a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500893/normal_5fb29b819fcf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404296/normal_5fa285ffb6b60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464080/normal_5fea189f6ed48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467577/normal_5fd79f1a20349.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417212/normal_5fcc7f9325398.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448347/normal_5fd84e7f6693e.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/469e4570-0acf-4819-96e0-39525cb9ea5d/vujimafozape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d7923c4-2c86-4731-8fcc-7d24f310eb0c/48748676302.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a00bbaa-fe1c-4ed4-b2c1-3eda89aa9072/fimuwitojomoda.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/kuttymovies_hd_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17be0c3a-17e4-4ea3-afbe-6a65aaa265cf/3335812074.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49efd6d4-564a-4ef7-b175-0a89b228aa0e/ninezenumok.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e83a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE83A 5580 bytes
SHA-256: 2370ac27bb89e59c7fdeda3284a9b7162224944937669a1ece981033b4dc2ffc
font_01_sfnt_off0000fb32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB32 11632 bytes
SHA-256: 5c61ad852d2317250cbc73c93dfa6b214849167866c514b9fb0a8005edcdf5c1
font_02_sfnt_off00011fc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FC6 17256 bytes
SHA-256: 0fdf191c55bffa39682ba7a2758aff9e7bd6cfb2855e43f001313cff6e6152ff

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