Malicious PDF — malware analysis report

Static analysis result for SHA-256 7caca1e8f5da0adb…

MALICIOUS

PDF

67.7 KB Created: 2021-02-19 06:26:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0f56f738ccffa9fa79e187ffcdbcfa8d SHA-1: b9a042929c58500619c4cba56ee8d0a86d33ba65 SHA-256: 7caca1e8f5da0adb788721b1ab44917b2b904c018293367dfb50f4a673d7e1d2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://druttle.ru/wix?keyword=exercise+3+sentence+completion+lesson+9+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451756/normal_601d64b3646f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382201/normal_5fc96be1f268e.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/kjbgcKh/tap_tap_heroes_best_runes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475989/normal_5fdc1b0eed242.pdfIn PDF document text
    • http://ropikapusofune.iblogger.org/wezegajoxadepa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462351/normal_6003b7e659a12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485699/normal_5fd5f9ee44567.pdfIn PDF document text
    • http://filajupixi.iblogger.org/39874447788.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/ijiOVa6/zigogapevezajidusanap.pdfIn PDF document text
    • http://kilewigi.iblogger.org/ruzupixujafaxutox.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423148/normal_60028be2908f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388282/normal_5fcb01f33220a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388050/normal_5fe9577b6c6a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444377/normal_5ffcc5a966d0a.pdfIn PDF document text
    • http://guxetiz.22web.org/kozizefenokeja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zoxokukazo.epizy.com/37888858756.pdfIn PDF document text
    • http://lojuwuwa.rf.gd/majovasokudizatipon.pdfIn PDF document text
    • http://fosixijikalapi.epizy.com/migowibemulininesevuwura.pdfIn 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_off0000cb39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB39 5516 bytes
SHA-256: ef2c9b615c710f97aed52b657c4568756f69de0c352338629cdaf65c57691521
font_01_sfnt_off0000ddf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF8 10396 bytes
SHA-256: aa27ea3af80b9a6be507ac36e13d6e0247b2fd0b55a2df8190115a4e037abeee