Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ba4a9e21f78151c…

MALICIOUS

PDF

76.1 KB Created: 2021-02-24 21:52:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 388e660d0cd02e2fc498daaa6e1c2cc9 SHA-1: 715879c65bcb24e6d7fe1eb9967c8c60b9c1e311 SHA-256: 8ba4a9e21f78151c82b34349b0f01abdc797bed1ee5fdb9f0ac5da1b073b1f60
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://jacksth.ru/award?keyword=how+to+pay+a+cell+phone+ticket+in+california PDF link annotation
    • https://cdn.sqhk.co/tefozakozup/hijdB5k/wefeziforove.pdfIn PDF document text
    • https://cdn.sqhk.co/belebudetub/PzVzJhb/92191625722.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446643/normal_6031816fa650c.pdfIn PDF document text
    • http://storedubai.shop/64356998362046gs.pdfIn PDF document text
    • https://salobomuxalevi.weebly.com/uploads/1/3/1/0/131070078/4db3b.pdfIn PDF document text
    • https://sobiwololisa.weebly.com/uploads/1/3/0/9/130969717/181504.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406473/normal_5fe5a242ac72f.pdfIn PDF document text
    • http://instasale.company/10616678062e7y9e.pdfIn PDF document text
    • https://kebolegenadudus.weebly.com/uploads/1/3/1/4/131454121/18763ac.pdfIn PDF document text
    • http://ighelpcenter.xyz/78611362889qzv5y.pdfIn PDF document text
    • http://goldotzyv.ru/lamborghini_song_whatsapp_status0n8qg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366354/normal_5fc6914c91e5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417528/normal_601e65ab07fe1.pdfIn PDF document text
    • https://cdn.sqhk.co/tazakabebilo/TgfAvdA/lewilugusu.pdfIn PDF document text
    • http://gladkoe-telo.xyz/verizon_fios_visa_gift_card_statusu04gd.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_off0000ead5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD5 5144 bytes
SHA-256: 6987abe12ade95d4356058e84a22fb61d44c2044629f95cd57b49d32a7e291ee
font_01_sfnt_off0000fc68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC68 12256 bytes
SHA-256: 812fffe805e9358a63d8125ee83f6b8883f7bf39a2f00be7b04cfa3eda47d07c