Malicious PDF — malware analysis report

Static analysis result for SHA-256 06f4833f7616f895…

MALICIOUS

PDF

94.1 KB Created: 2021-03-23 13:28:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 57b4d3b8f5e184bd66198dda66984971 SHA-1: 88dddae628d5993394841f58b4da014fe3e8d945 SHA-256: 06f4833f7616f89525b6a9075e7dc624df6ab01c5ec61fe209769ca79d897fc3
184 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 phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm used for SEO manipulation or to redirect users to malicious sites. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5967

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://nipisod.ru/strik?utm_term=arturia+minibrute+2+used PDF link annotation
    • https://zitavuzan.weebly.com/uploads/1/3/1/3/131379524/fopipipopoxexezewaju.pdfIn PDF document text
    • https://kogijusixi.weebly.com/uploads/1/3/5/3/135312463/2196378.pdfIn PDF document text
    • https://rikawoxazedopet.weebly.com/uploads/1/3/4/7/134772555/gofigutavewal-reboketizimiroj-rapovije.pdfIn PDF document text
    • http://f13x.xyz/cute_hidden_stickers_on_snapchatlbmz2.pdfIn PDF document text
    • https://redorofi.weebly.com/uploads/1/3/5/3/135383823/mifetijuwu-nifekazizux-rebili-zelavozabepu.pdfIn PDF document text
    • http://rukozhop-guide.com/does_the_bible_explain_free_willium1f.pdfIn PDF document text
    • https://xafukulirodut.weebly.com/uploads/1/3/1/3/131379356/8616111.pdfIn PDF document text
    • https://wuzezabor.weebly.com/uploads/1/3/1/4/131438899/8328566.pdfIn PDF document text
    • https://xixolediz.weebly.com/uploads/1/3/4/5/134513169/suxuxog_xujizuju_mirapowozut.pdfIn PDF document text
    • http://vetobiz.sportsontheweb.net/calendario_completo_serie_a_19_20.pdfIn PDF document text
    • https://sanajupa.weebly.com/uploads/1/3/1/4/131406847/1339310.pdfIn PDF document text
    • https://lafuxekezijunu.weebly.com/uploads/1/3/1/4/131406487/eb8c2.pdfIn PDF document text
    • https://paxupodef.weebly.com/uploads/1/3/4/7/134763896/puzekenena.pdfIn PDF document text
    • https://letezinujafi.weebly.com/uploads/1/3/4/9/134901841/4f5b43d17.pdfIn PDF document text
    • http://xuzerujagojagip.scienceontheweb.net/autodesk_3ds_max_shortcuts.pdfIn PDF document text
    • https://jaxizunup.weebly.com/uploads/1/3/4/8/134885867/muvetemi_dovesuligotabeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://19aaccd0-9772-41b6-85c4-be118606641a.filesusr.com/ugd/a12125_7605e9f3857e4b0b9b079ace3f74bd61.pdf?index=trueIn PDF document text
    • https://ab60d57a-1f92-408f-9079-0b325776b613.filesusr.com/ugd/724fb5_85aca2cb06584b56b18ee90ef2a8f3c9.pdf?index=trueIn PDF document text
    • http://dasobiviwadodaj.atwebpages.com/66223422722.pdfIn PDF document text
    • https://7a1f2a0d-094a-4466-88af-72a4af93b9fa.filesusr.com/ugd/22739b_df74ca1cb28c41ffad7b0dea1d8e14da.pdf?index=trueIn PDF document text
    • https://35548484-ce42-4b18-9d9d-834326683263.filesusr.com/ugd/a221b6_ed7b6a55df0544df96bba09f9443f54c.pdf?index=trueIn PDF document text
    • https://f06ae689-34e6-4fd9-b749-a5985747e370.filesusr.com/ugd/4117a9_3ac41ad20bd948edbef0e87b29e80a02.pdf?index=trueIn 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_off00013bd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BD4 4972 bytes
SHA-256: 9baf523673870f6c7a7732e7bbaa8e48479380c3ea98f87f9396d99f5f8df444
font_01_sfnt_off00014c91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C91 11480 bytes
SHA-256: c6029db01c8f3a27fb758490d10d8e5ae7f2f05e09a132e9adf29ba89a0d3acb

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