Malicious PDF — malware analysis report

Static analysis result for SHA-256 3730eeb06220ef1b…

MALICIOUS

PDF

77.2 KB Created: 2021-03-03 15:45:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac7a1ec4d234b4d55f2812efc7cbb584 SHA-1: 2b54c53e7e3a8f328bb00597e593e5a38e05e2ce SHA-256: 3730eeb06220ef1b452868ccc0a82e01bd52f14071f99dd2c51d08e2e4b3ba5e
96 Risk Score

Malware Insights

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

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, likely used to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit vulnerabilities or trick users into visiting malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/123?utm_term=alla+prima+pochade+box+review
    • https://sadusobagobazep.weebly.com/uploads/1/3/0/7/130776682/vetevafuri.pdf
    • https://cdn.sqhk.co/dabebasavus/atjgshh/gepogovolanigejigofujabo.pdf
    • https://static.s123-cdn-static.com/uploads/4460447/normal_5feddf4262f01.pdf
    • https://static.s123-cdn-static.com/uploads/4393353/normal_60057c9d9e5eb.pdf
    • https://fipamowusaki.weebly.com/uploads/1/3/4/8/134879766/vowixowijugo.pdf
    • https://dazuvekojuj.weebly.com/uploads/1/3/4/8/134863877/9447705.pdf
    • https://cdn-cms.f-static.net/uploads/4402250/normal_600df786a95eb.pdf
    • http://nemosixumeki.mypressonline.com/96044094087.pdf
    • https://static.s123-cdn-static.com/uploads/4366022/normal_5fe5a9ca949a2.pdf
    • https://xinofebew.weebly.com/uploads/1/3/5/3/135305957/wupix.pdf
    • https://cdn-cms.f-static.net/uploads/4371266/normal_5fe8f141f30e8.pdf
    • http://poxumanavofeboz.scienceontheweb.net/30720760167.pdf
    • https://cdn-cms.f-static.net/uploads/4426696/normal_602071de5fe9b.pdf
    • https://static.s123-cdn-static.com/uploads/4420761/normal_5fc87a783eeb8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fiforeru.atwebpages.com/nixumifama.pdf
    • http://nojikigor.myartsonline.com/dirt_devil_power_stick_lite_4_in_1_corded_stick_vacuum.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1ca.bin
7f55c9314609a40105d02c0ea410a03414960e78db10420261c0956574ae458e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CA 5484 bytes
font_01_sfnt_off00010456.bin
08f58a9c6919568ecd8e603e5477b6cb50e7a04a0e5e512f500e532d89b8d4b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x10456 10468 bytes