Malicious PDF — malware analysis report

Static analysis result for SHA-256 fad85685c4518646…

MALICIOUS

PDF

80.0 KB Created: 2021-06-06 05:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 554a3d29cea83926059445ed894d1f87 SHA-1: d98da730360721c5955bde49d6c34d7014ec73fe SHA-256: fad85685c451864651107f5225ba7f1a699b25f816eb5c696f2e7ede6fe434aa
164 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one pointing to a suspicious domain 'oniceh.ru' and another to a link farm of PDFs. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or a scam. The presence of embedded links suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://oniceh.ru/pbw?utm_term=how+to+get+a+voice+changer+app+on+ps4
    • https://gebogezajir.weebly.com/uploads/1/3/4/6/134685536/d2928f9.pdf
    • https://jugivukovetid.weebly.com/uploads/1/3/0/7/130739525/xoreku_semoxik_dojogatewemize_xanurumapi.pdf
    • https://bivamotitujodo.weebly.com/uploads/1/3/4/7/134712473/4620492.pdf
    • https://gejeximiba.weebly.com/uploads/1/3/4/8/134897602/girelibilosafezewad.pdf
    • https://panatomovedo.weebly.com/uploads/1/3/4/6/134688712/48677.pdf
    • https://befadileniralan.weebly.com/uploads/1/3/6/0/136082268/5af65d310.pdf
    • https://gowubezu.weebly.com/uploads/1/3/4/4/134497845/ded499b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://labidan.pbworks.com/f/pakegadewagurepevabajopa.pdf
    • https://uploads.strikinglycdn.com/files/f5e6a20c-5f8a-445c-8068-da52d4be2012/lazusiwuruvekusozival.pdf
    • http://tiduxikuve.pbworks.com/f/accounting_salary_guide_robert_half.pdf
    • https://uploads.strikinglycdn.com/files/5b73a2ba-1ccf-41ab-9b30-b4107dbf496b/kokurilosufuresupar.pdf
    • https://uploads.strikinglycdn.com/files/d1c28dfd-8fdb-4ed5-a656-6d491f3ae469/wosovoxabepijavidurulo.pdf
    • https://uploads.strikinglycdn.com/files/7f132e6d-29a8-4c7a-8fa3-95957c229bc5/what_is_in_the_directv_ultimate_package.pdf
    • https://uploads.strikinglycdn.com/files/be605433-dc76-42b9-8e17-12ea72be67db/55249516663.pdf
    • https://uploads.strikinglycdn.com/files/e9b200a7-66ab-4c1a-838a-1c6ade9b24aa/best_hip_hop_songs_2010_to_2019.pdf
    • https://uploads.strikinglycdn.com/files/3955ef3d-daf6-4726-ba43-ee61481606fc/21442690448.pdf
    • http://rimikupababo.pbworks.com/f/elves_vs_dwarves_game_guide.pdf
    • https://uploads.strikinglycdn.com/files/c22135c8-14e0-4749-9e78-ae77bdd8d4a6/what_is_the_mass_number_of_element_x.pdf
    • https://uploads.strikinglycdn.com/files/bc0d52d4-a36e-4862-90af-b4999519bb79/tiputase.pdf
    • https://uploads.strikinglycdn.com/files/865c0fdd-c323-43a2-a9ff-51c1f36fa14e/todozekezut.pdf
    • https://uploads.strikinglycdn.com/files/c4625bab-5be7-4b15-904e-eb0acc123d60/letra_de_hosanna_marcos_barrientos.pdf
    • https://uploads.strikinglycdn.com/files/24f1e9b5-8c60-41c3-b696-6b7bc01ad53a/suboboxivuparajuwepofotuv.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee17.bin
b064856207628ff3dda66e8ac3bad7a5e69850280f029b1863e95e41ed93bee1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE17 5364 bytes
font_01_sfnt_off0001006d.bin
8085e85f7ab2ec424f2d1e8603e5adaf13eeac0702cda241d6a7218dd8b8c71c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1006D 2484 bytes
font_02_sfnt_off00010b0f.bin
1f56d66e3645969ab831771970879e508f3bf2f6b9c41c573efb12a598ab36ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B0F 11784 bytes

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