Malicious PDF — malware analysis report

Static analysis result for SHA-256 9117d64d4525adef…

MALICIOUS

PDF

74.9 KB Created: 2021-02-02 15:25:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2ec56d953468302b760296c160509e5c SHA-1: 27d0d59a1c91ffecba1b492cf27153bcdd774670 SHA-256: 9117d64d4525adef68828669da78bb8cfeb4749cfea1ada2b2e80daa734762ba
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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
  • 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://jottigo.ru/wb?keyword=avg%20antivirus%20%20for%20pc%20free PDF link annotation
    • http://chaptejvxz.fun/farm_zoo_bay_island_village_hack_apkst5n6.pdfIn PDF document text
    • https://wosobariwosamu.weebly.com/uploads/1/3/4/3/134372044/jogolerutenufi-jiwelanaluge-bubepexotomejad.pdfIn PDF document text
    • https://vaputonusodi.weebly.com/uploads/1/3/4/4/134493057/fd622cc5dab76.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479707/normal_5fcc7156b80aa.pdfIn PDF document text
    • https://xafasujogi.weebly.com/uploads/1/3/4/3/134374351/51041448899.pdfIn PDF document text
    • https://zekasujiminog.weebly.com/uploads/1/3/4/3/134366003/gepivoxasino-bifuviga.pdfIn PDF document text
    • https://wikabolodaj.weebly.com/uploads/1/3/4/6/134648749/gejesogedilapujopu.pdfIn PDF document text
    • http://usblighter24.site/36596438851nmx2.pdfIn PDF document text
    • https://zezevibowavaki.weebly.com/uploads/1/3/4/8/134854125/984ef6c4e9.pdfIn PDF document text
    • https://wojumujar.weebly.com/uploads/1/3/5/3/135396772/sabudeputazi_jezeg_lezosafoze.pdfIn PDF document text
    • https://sekilulijafos.weebly.com/uploads/1/3/1/4/131438177/5475095.pdfIn PDF document text
    • https://tudogaxutu.weebly.com/uploads/1/3/5/2/135295125/lupusulesoj_monefix_rezemutora.pdfIn PDF document text
    • https://wojujasomiselok.weebly.com/uploads/1/3/4/4/134487215/698aa8cd90de3.pdfIn PDF document text
    • https://vugawijop.weebly.com/uploads/1/3/4/5/134594760/kawewanar.pdfIn PDF document text
    • http://vuvuga.xyz/213512512441epul.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_off0000e9fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FD 5200 bytes
SHA-256: eea82d363fa5efae359bec6dfb6e031d8c9cbaf19fb81448c7df5ac98f97122c
font_01_sfnt_off0000fbd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD4 10280 bytes
SHA-256: 6bafd6d24a2925639d128ff27fac3a304c37785dd76941778b120d3ea491d7f6