Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba47d0422a04c062…

MALICIOUS

PDF

86.2 KB Created: 2021-04-02 04:04:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86965777d037084acceb072c5eeab9ec SHA-1: d3b665190ceb026a524a97eeaf4c7ccffed80d31 SHA-256: ba47d0422a04c06265236c3476661812077774939800c5cb72a2632f5d3e3910
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, suggesting a link farm or redirection to malicious sites. The ML classifier also strongly indicated maliciousness. While no scripts were directly extracted, the PDF structure and numerous external URLs point towards a phishing or malicious content delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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-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://zajinet.ru/aws?utm_term=how+much+rp+can+you+ask+from+riot
    • https://cdn.sqhk.co/nuvaratuji/yzghLjj/real_gem_mine_near_me.pdf
    • https://cdn-cms.f-static.net/uploads/4448547/normal_6063cb654329b.pdf
    • https://cdn-cms.f-static.net/uploads/4467306/normal_600f604241bdf.pdf
    • https://cdn-cms.f-static.net/uploads/4445889/normal_602b7c461c348.pdf
    • https://cdn.sqhk.co/desogepupema/djhbo5E/vizabafadewuvuz.pdf
    • http://kosamaritaj.getenjoyment.net/chamakam_meaning.pdf
    • https://cdn-cms.f-static.net/uploads/4472503/normal_600b5460b94fb.pdf
    • https://cdn-cms.f-static.net/uploads/4383798/normal_6011d45615264.pdf
    • https://cdn-cms.f-static.net/uploads/4486969/normal_5fe8b4e9a1cdf.pdf
    • https://static.s123-cdn-static.com/uploads/4424025/normal_5fec9f7036480.pdf
    • https://cdn.sqhk.co/vobevufubito/7Odjiij/83399015180.pdf
    • https://cdn-cms.f-static.net/uploads/4459468/normal_60610b19a4aa2.pdf
    • https://static.s123-cdn-static.com/uploads/4369655/normal_5fcaf5a01e0b8.pdf
    • https://cdn-cms.f-static.net/uploads/4382406/normal_5fe7ab1f35187.pdf
    • https://cdn.sqhk.co/tepikipo/2hf1ghl/mevaxasek.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zalatikewal.atwebpages.com/boston_consulting_matrix.pdf
    • https://748e6e98-33e2-4bd1-95aa-01ea3505a154.filesusr.com/ugd/704f6c_ab980bc52406450788fc12b1ac273126.pdf?index=true
    • https://0cfe495c-9a5f-46a1-a5f3-fb21b6211bac.filesusr.com/ugd/7aabb2_f876debbb8094e139ee133795eafd5ec.pdf?index=true
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec73.bin
0fcef192c95d6fd4d5333de3e5f0a04c8525a73f6e29f4febd37223f58d6e746		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC73 3080 bytes
font_01_sfnt_off0000f77c.bin
f839f96dcefa0832a12f0f79cee9513517b2492ba66d0483bfd42d38dad44f03		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF77C 5440 bytes
font_02_sfnt_off000109eb.bin
1ecdb997acfea074153339ef4818bbfd6d9c92417b5a52969b22f8dd545429ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109EB 13660 bytes
font_03_sfnt_off00013588.bin
2613bce1f15c5f691a1a3a989472159a1011a670d9444ed226435ade8a7ca2c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13588 16252 bytes

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