Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fb844bf32f4253b…

MALICIOUS

PDF

72.6 KB Created: 2021-02-09 15:07:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9d05493c63c7cc66e8fce0eed53ded8c SHA-1: 0bdca19405606e599916be772419927b48b48e72 SHA-256: 1fb844bf32f4253bc8e73069125d771b828b0948776f06c28d9f1924a292265a
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • 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://druttle.ru/wb?keyword=hrv%20biofeedback%20app%20android PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4427300/normal_5fdf46265665a.pdfIn PDF document text
    • http://tugidunamoz.22web.org/pediatric_conjunctivitis_guidelines.pdfIn PDF document text
    • https://cdn.sqhk.co/vawikepaf/gidGjgz/gukabu.pdfIn PDF document text
    • https://dunabosugetagek.weebly.com/uploads/1/3/4/6/134601841/a5a45812b6c1d62.pdfIn PDF document text
    • https://vunusamonumated.weebly.com/uploads/1/3/4/0/134040658/jufomigonabub.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/AJhbcGV/26575168964.pdfIn PDF document text
    • https://kidenido.weebly.com/uploads/1/3/1/6/131636891/3923096.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489740/normal_5ff970c4e5d21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385422/normal_600fad1e3850c.pdfIn PDF document text
    • https://cdn.sqhk.co/goronikel/hd5f0ge/otherworld_legends_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473410/normal_5fd1b4f8e16ee.pdfIn PDF document text
    • http://xtw2.club/radio_italia_fm_streamingpbr5q.pdfIn PDF document text
    • https://cdn.sqhk.co/gobenebovi/jghaghK/46546166681.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fijazuzid.rf.gd/business_casual_and_business_formal.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/jijasukukidusik.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_off0000de22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE22 5164 bytes
SHA-256: c6a5abf00897c94fff00a42b149e3f3adf5f356d93e38ee8df4675b7493baa68
font_01_sfnt_off0000efc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC7 11168 bytes
SHA-256: 519fd5aef0d579af917715b667556c343198597c4b6a58c826fa4bc5c2b9bcf2

Open this report in the interactive analyzer, or submit your own file for analysis.