PDF malware analysis — malicious · 4ac059e638c1ef73

MALICIOUS

PDF

106.3 KB Created: 2021-06-05 11:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4949bda563dba79ffcf57926a44073b4 SHA-1: d4315ea34486b3d1ac8152eee527f21afbf3f452 SHA-256: 4ac059e638c1ef73f6ab4d584606cf4c29814f2c853c100f6827ba0d80366865

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to PDF files with numeric slugs, indicative of a link farm or SEO spam. The ClamAV detection as 'Pdf.Phishing.Trojan' and the presence of numerous external URLs strongly suggest a malicious intent, likely phishing or malware distribution. No scripts were extracted, but the PDF structure itself is used to host and link to external content.

Machine Learning

Nyx PDF Classifier clean score 0.0839

Heuristics 4

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
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://inwebjor.ru/pbw?utm_term=what+do+the+codes+mean+on+the+pulse+point+app
- https://pobasejedewepiz.weebly.com/uploads/1/3/4/0/134017346/3631916.pdf
- https://cdn-cms.f-static.net/uploads/4383586/normal_6030e0ba02095.pdf
- https://rokojilezel.weebly.com/uploads/1/3/2/3/132302907/5070374.pdf
- https://sogorowov.weebly.com/uploads/1/3/4/4/134475374/76eb34.pdf
- https://cdn-cms.f-static.net/uploads/4456391/normal_601db63595225.pdf
- https://cdn-cms.f-static.net/uploads/4408172/normal_603b10d637121.pdf
- https://static.s123-cdn-static.com/uploads/4481847/normal_5fe2aa3ca07b1.pdf
- https://cdn-cms.f-static.net/uploads/4480899/normal_6065c45b06e44.pdf
- https://static.s123-cdn-static.com/uploads/4421767/normal_5fc67e32169c7.pdf
- https://static.s123-cdn-static.com/uploads/4411682/normal_5fe15c94a36ed.pdf
- https://zefisazivite.weebly.com/uploads/1/3/5/3/135314851/9621917.pdf
- https://cdn-cms.f-static.net/uploads/4486521/normal_602a174e5d053.pdf
- https://static.s123-cdn-static.com/uploads/4412758/normal_5ff7135b68092.pdf
- http://fontawesome.iohttp://fontawesome.io/license/
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/8be3cfc5-98bf-4891-a53a-a2ed31d9d1ab/66123879959.pdf
- https://uploads.strikinglycdn.com/files/9253cec0-4868-4301-be65-25291df6840c/la_amortajada_descargar_gratis.pdf
- http://zigunef.pbworks.com/w/file/fetch/144641433/59925526194.pdf
- https://uploads.strikinglycdn.com/files/b3960e91-0fe8-4215-a486-79ef42d60ad8/ratios_proportions_worksheets_7th_grade.pdf
- https://uploads.strikinglycdn.com/files/e48f5906-1d8f-4f0d-b20e-840cb74fac1b/27010193932.pdf
- https://uploads.strikinglycdn.com/files/cb01539c-d490-4134-9f8f-0614903b7e3c/jaxatibofuxozebuzekub.pdf
- https://uploads.strikinglycdn.com/files/78f20a4b-5421-4f33-822e-7f0461f21179/alphatrak_2_test_strips_petco.pdf
- https://uploads.strikinglycdn.com/files/bb575d43-07a4-42c6-87fb-628846a000d7/toshiba_satellite_l755-s5216_specs.pdf
- http://sejiliki.pbworks.com/f/journey_2_the_mysterious_island_in_hindi_hd_download.pdf
- https://uploads.strikinglycdn.com/files/d5451bcc-3076-404f-9ca0-0be94f3c6c70/structures_or_why_things_dont_fall_down_wiki.pdf
- http://scripts.sil.org/OFL
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0001470d.bin` `a95d63fca50b4c71399b489fcfffbb830bcf756823c53e6a8693c425460d1a18`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1470D	1928 bytes
`font_01_sfnt_off00014f77.bin` `ff808e2711519b19cb1548064acf3c0e10a84f06bf2684da34924e448da09253`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14F77	5232 bytes
`font_02_sfnt_off00016128.bin` `6f251ba019474549aa1e8304b35bc8832e475fd0bb7b242a925518298bd76790`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16128	2156 bytes
`font_03_sfnt_off00016a5d.bin` `91a6efcf3b6cb5e335e5e500979684279756bda57de347381d35eb264fb7742f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16A5D	13148 bytes
`font_04_sfnt_off000196d6.bin` `e519f4e4ac6d9b0f57dce0c0d49b484e4d1d842646fa75230b4829220ba81c73`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x196D6	16140 bytes

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