Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae8f2388375f6958…

MALICIOUS

PDF

73.2 KB Created: 2021-02-06 19:29:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: d1fda6711dcb44f27c2ac5ad53a0634e SHA-1: 359feea270bf859a7c629d95a4aa973fcf82c814 SHA-256: ae8f2388375f6958393948d7356780f4f3a4a9f3701c6d21f9d4d7800a5c54c3
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, suggesting a link farm or phishing operation. The embedded URLs point to various domains, including 'baarspo.ru', which are likely used to redirect users to malicious content or phishing pages. No scripts were extracted, but the PDF structure and numerous external links strongly suggest a phishing or content-luring attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://baarspo.ru/aws?utm_term=battery+ignition+system+ppt PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402722/normal_5fd795aaa0ced.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467306/normal_5ff2b4135d972.pdfIn PDF document text
    • https://lolifibek.weebly.com/uploads/1/3/4/6/134634661/cae0f8355d0.pdfIn PDF document text
    • https://jijobowuzum.weebly.com/uploads/1/3/4/5/134590228/3160129.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495399/normal_5fcf6fb834cd1.pdfIn PDF document text
    • https://biparobotimipus.weebly.com/uploads/1/3/4/4/134498468/luneluwopubojed_gosebelezo_gibebaxafurijo_gineta.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380230/normal_5ff0a0612d9c3.pdfIn PDF document text
    • https://mikuzowadakan.weebly.com/uploads/1/3/1/3/131383480/kuzujepaviwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467005/normal_5fd63c78a886f.pdfIn PDF document text
    • https://zutuvolesem.weebly.com/uploads/1/3/0/7/130775525/xuvipaxobivi.pdfIn PDF document text
    • https://degusatujetuz.weebly.com/uploads/1/3/0/8/130813325/rijilet_nekomirasagota.pdfIn PDF document text
    • http://shoes-storie.club/baroque_text_font_freeg1xcq.pdfIn PDF document text
    • https://vokefepafox.weebly.com/uploads/1/3/4/3/134333292/zalowon_muworowafuvaxub_fivota.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476420/normal_5ffac33698702.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE100 5256 bytes
SHA-256: 358bd6fa80796b598375eedb03f2d77f371223e56d2b8bdfad03e2487d1430b7
font_01_sfnt_off0000f2dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DD 11032 bytes
SHA-256: 766149cf722a0df48ba3a27e6ac6298542dc2800906cdddbb05f1e8d5c621294

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