Malicious PDF — malware analysis report

Static analysis result for SHA-256 511eb691ef70a67c…

MALICIOUS

PDF

79.5 KB Created: 2021-03-07 18:03:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1814b509ff921340675b531a9e6de754 SHA-1: bb3ef1e8e74a74a4ca3a06646c7568e17bc95b28 SHA-256: 511eb691ef70a67c35b84a6cf9af52a9fda22b385ee98a43d7c2406810b2a5a8
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://pelibifir.ru/award?keyword=boss+ve+20+vocal+harmonizer PDF link annotation
    • http://snt-br.ru/bashment_time_riddim_mp4s6153.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/410786759.pdfIn PDF document text
    • https://marotebage.weebly.com/uploads/1/3/4/7/134712984/wutuvizepuji-verolenefased.pdfIn PDF document text
    • http://chebsvet.ru/74436490125kf54t.pdfIn PDF document text
    • http://xedeporib.medianewsonline.com/vufexejobukukiwumizivo.pdfIn PDF document text
    • https://xoxomedeze.weebly.com/uploads/1/3/5/3/135308121/fadbaa8c970b8.pdfIn PDF document text
    • https://cdn.sqhk.co/xeliwiwogivo/vjefier/gusuvojate.pdfIn PDF document text
    • https://cdn.sqhk.co/moromasi/heDjhgc/viking_battle_sites_in_england.pdfIn PDF document text
    • https://vufosaxirit.weebly.com/uploads/1/3/4/0/134018891/zisivawijidiri.pdfIn PDF document text
    • http://batmbatm.ru/7360604886214081.pdfIn PDF document text
    • https://bifukumuvu.weebly.com/uploads/1/3/5/3/135347201/0f16082bbf043.pdfIn PDF document text
    • http://innov-cis.net/tapoveputeniziveromuwuwewln669.pdfIn PDF document text
    • http://magnitoli-2ekran.site/cardinal_quest_2_thief_guidefiu9k.pdfIn PDF document text
    • https://kekugijofer.weebly.com/uploads/1/3/5/3/135321092/1471656.pdfIn PDF document text
    • http://topvideo.design/katrina_kaif_bikini_images94t2g.pdfIn PDF document text
    • https://nokaroropufut.weebly.com/uploads/1/3/1/4/131453144/zomefakuf.pdfIn PDF document text
    • http://ludshop.xyz/how_many_amps_does_a_compressor_uselzrcz.pdfIn PDF document text
    • https://cdn.sqhk.co/dewufidabo/DNoiaw6/strategic_management_process_7_steps.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_off0000fb6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6D 5472 bytes
SHA-256: bf1aa12de9f1e91d37afcee8d3eb3e6e9b18e952fdf2c047cc9711786b9eb8f8
font_01_sfnt_off00010dec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DEC 10252 bytes
SHA-256: 76b8fb883357c2c20a0bd4807e669a9cf919c617faf6bcf6671ff8f8bedaacdb