Malicious PDF — malware analysis report

Static analysis result for SHA-256 909d708808de696e…

MALICIOUS

PDF

73.9 KB Created: 2021-03-15 12:45:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 762a4d24eb1073da223d46e48b5d03d2 SHA-1: bfa72cce33521f1b655aa7119d01a9bbd96590f9 SHA-256: 909d708808de696e8fe6b24cbf92bca09fd20b3e4a9a6267676c2ee46b400617
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs the user to a suspicious domain, disguised as a search result for 'Romanov family tree pictures'. This suggests a phishing or social engineering attack aimed at redirecting users to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent.

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/wix?keyword=romanov+family+tree+pictures
    • https://bixunirejo.weebly.com/uploads/1/3/5/3/135329058/vuwakezo.pdf
    • https://banetopebored.weebly.com/uploads/1/3/4/8/134874573/xumadolu_dozomimixu_fototubusuxobor.pdf
    • https://cdn-cms.f-static.net/uploads/4379048/normal_603e447a1b15f.pdf
    • https://kifoguwo.weebly.com/uploads/1/3/1/3/131383532/xugonixokub.pdf
    • https://static.s123-cdn-static.com/uploads/4387412/normal_5fca85a759c06.pdf
    • http://linorusani.iblogger.org/popufuwe.pdf
    • https://rumikupim.weebly.com/uploads/1/3/5/3/135310872/b1ec692cdbb3.pdf
    • https://static.s123-cdn-static.com/uploads/4488116/normal_5fcbcb8d4ee7a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://627ea4a7-3f28-4bf3-8c99-6a9da7dacf48.filesusr.com/ugd/1970e2_58cc867313344a16b993959c591171d8.pdf?index=true
    • https://s3.amazonaws.com/megelugik/gst_invoice_guidelines_india.pdf
    • https://0cc2a7d0-6f33-4335-9ec9-554d9418487e.filesusr.com/ugd/cb4a18_5930e75d1bb44fa598bf36ccf43fa0a8.pdf?index=true
    • https://4c5ad993-366d-4b3a-aa99-9b6f56583180.filesusr.com/ugd/01e791_6949dcec46b1441ebdafef048ea55bc7.pdf?index=true
    • https://80f75f89-a1e3-4611-a0ef-7a704eb82da9.filesusr.com/ugd/0286dd_2c2b44f200ed43aab4fe5b81a2da7213.pdf?index=true
    • https://s3.amazonaws.com/kimone/88098147643.pdf
    • http://tekisinasapev.epizy.com/vidas_secas_filme_completo_youtube.pdf
    • https://s3.amazonaws.com/kesumasaka/are_old_homelite_chainsaws_any_good.pdf
    • https://s3.amazonaws.com/kavifunaruvi/guvajusegekij.pdf
    • https://s3.amazonaws.com/fidobakipivogit/define_acknowledgement_in_report_writing.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_off0000e4a2.bin
fede76832e2fa41a2ef871fbd2d1415727c7347206f31d90184164388ad13251
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A2 5332 bytes
font_01_sfnt_off0000f6c0.bin
adbb7b833c78d4cfc91e240e5707e48626c92edab7bba4270ce3a11f30f460b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C0 10664 bytes