Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd95fc0d4a58b912…

MALICIOUS

PDF

83.2 KB Created: 2021-05-30 09:10:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 580d3273e815a5e8ecd21d2cc6815d64 SHA-1: ae1b9fc2f254c6e9320e7b4f529c77da15f6a699 SHA-256: fd95fc0d4a58b91205c9b81b0a2ae72bc3801ca818cfc5f4dbd4e0edb37748c6
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to PDF files hosted on file-sharing services, suggesting a link farm or phishing operation. The presence of a URL related to 'chainsaw massacre full movie free' indicates a lure to attract users. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://nipisod.ru/123?utm_term=chainsaw+massacre+full+movie+free
    • https://zefugomifavo.weebly.com/uploads/1/3/6/0/136087281/zajubijejonelojoxip.pdf
    • https://motawifuliwax.weebly.com/uploads/1/3/3/9/133999363/3893103.pdf
    • https://susopusamug.weebly.com/uploads/1/3/4/3/134336197/268063.pdf
    • https://cdn-cms.f-static.net/uploads/4475016/normal_60548e7d65224.pdf
    • https://cdn-cms.f-static.net/uploads/4420597/normal_5fdad71795dc7.pdf
    • https://cdn-cms.f-static.net/uploads/4451742/normal_600fa8ec88a04.pdf
    • https://safusubugem.weebly.com/uploads/1/3/4/6/134609944/3660097.pdf
    • https://suvojenedixu.weebly.com/uploads/1/3/4/3/134354738/dikajaro_balerujur_gonovejomexu.pdf
    • https://static.s123-cdn-static.com/uploads/4382779/normal_5fd08b2930654.pdf
    • https://cdn-cms.f-static.net/uploads/4370275/normal_602afdb008f80.pdf
    • https://nodopemewave.weebly.com/uploads/1/3/2/6/132682748/6016878.pdf
    • https://cdn-cms.f-static.net/uploads/4401982/normal_5fdae1f7bc0cf.pdf
    • https://cdn-cms.f-static.net/uploads/4500432/normal_60566808da155.pdf
    • https://static.s123-cdn-static.com/uploads/4475580/normal_60017f1fc799c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4a6f8944-d76a-4d67-a81e-5de098486b73/52188558709.pdf
    • https://uploads.strikinglycdn.com/files/944b38b6-9116-4c40-b177-2e0828d9cbde/17337500158.pdf
    • https://uploads.strikinglycdn.com/files/99a044c1-d464-4d86-a1f0-b2b7187b8648/61369223537.pdf
    • https://uploads.strikinglycdn.com/files/e8fc7659-3fca-4819-88aa-fb3a8a0ed92f/taotao_atv_troubleshooting.pdf
    • https://uploads.strikinglycdn.com/files/70044820-6111-44c4-9872-cf1b10a89f52/best_crossfit_workouts_at_home.pdf
    • https://uploads.strikinglycdn.com/files/16c43dee-2b03-49f3-bebc-9f15c1525ee8/sopa_de_letras_con_numeros_cardinales_en_ingles.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_off000106a0.bin
69c2fc8f902c0524c8bf06eee3799905ae9bbf656bde8a443c953457ecde234c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106A0 5176 bytes
font_01_sfnt_off00011825.bin
e865c9e58d0ac64976ee2843e0e56f5cc06db42979c8a97cc60c982a9f924ceb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11825 11432 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.