Malicious PDF — malware analysis report

Static analysis result for SHA-256 87baee3de72ff728…

MALICIOUS

PDF

68.9 KB Created: 2021-02-22 11:49:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 24c917aad770bf86bbd31d04feac26f0 SHA-1: 2a96bf6abce0df587d4a20a08ac0d0cbeb5e5098 SHA-256: 87baee3de72ff728b8aa53d1482e4fe2dd060c32b593b0ee28f24709cc0be6c2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. ClamAV detection and ML classification strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a product search, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/strik?utm_term=sodastream+source+black+white+with+flavours+source PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4530151/normal_5fc6c1edc55d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420224/normal_60118f590042b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411935/normal_5fc854791adcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452865/normal_6029fe5ba20ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412895/normal_5fdd728e38054.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496014/normal_5fe4e866b1afc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485322/normal_5fd1ce8925a24.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424951/normal_5fcd78d17a908.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450440/normal_5ff3a040d2d32.pdfIn PDF document text
    • https://cdn.sqhk.co/kasuwajavi/w2Uigjd/62707335032.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501975/normal_5ff13ca880dfb.pdfIn PDF document text
    • http://comp-arenda.site/92416505091xipsh.pdfIn PDF document text
    • http://5coupons.info/88144999415odwow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xakufidadalajup.epizy.com/german_visa_invitation_letter_template.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_off0000cf67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF67 5720 bytes
SHA-256: b94e26264fea263f93dcdaced88e9208a82eb54fccc34bdb70d34a24b3e44ec4
font_01_sfnt_off0000e2d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D2 10516 bytes
SHA-256: d89877b829f2f9823879a0fb2f5a8a1f616e7d2bb11c59c0f6b02bed79b32191