Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4afdea2665c6eff…

MALICIOUS

PDF

69.9 KB Created: 2021-02-19 11:25:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 73ed289cabf452678eef38bde424eb9a SHA-1: 71bb1af30fa30f3e9c2a586ab39384307443b313 SHA-256: f4afdea2665c6eff77e8565b694fdc73717f960a1440129bd5486683fafde89a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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
  • 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://maypoin.ru/wix?keyword=compass+shipping+company PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452865/normal_6010cbae58ded.pdfIn PDF document text
    • https://nagagixibedixu.weebly.com/uploads/1/3/1/6/131606435/sovezeripad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446937/normal_5fc669791ddc4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451353/normal_5fe3b18e7e0bd.pdfIn PDF document text
    • https://xupugafowepeg.weebly.com/uploads/1/3/0/8/130814457/4436163.pdfIn PDF document text
    • https://jezaxinadi.weebly.com/uploads/1/3/4/5/134597346/fixedososoreku-vuxafigil.pdfIn PDF document text
    • https://delidago.weebly.com/uploads/1/3/0/9/130969485/86dee81e6.pdfIn PDF document text
    • https://cdn.sqhk.co/lusimalifa/SjiQgfP/microsoft_launcher_android_10_gestures_samsung.pdfIn PDF document text
    • https://puwevifu.weebly.com/uploads/1/3/4/4/134465284/e0948a55d2c.pdfIn PDF document text
    • http://datujizid.iblogger.org/relikifiboloro.pdfIn PDF document text
    • https://cdn.sqhk.co/fisoxinizo/DiaNCob/33590161742.pdfIn PDF document text
    • https://xatiletovolut.weebly.com/uploads/1/3/1/4/131409128/zubanabukutozemedes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374519/normal_5fd91796a087b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ladugokifuwub.rf.gd/73144708884.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_off0000d6e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E2 5224 bytes
SHA-256: 212bec052141ee29a7a33618830c8e19c1f8fd3251f9a0664352b1984fe5f5c9
font_01_sfnt_off0000e88b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88B 10148 bytes
SHA-256: 43e862fe0b7f119097414d74cc8f2cd2a879a81d2db6359a33365738c65c8b81