Malicious PDF — malware analysis report

Static analysis result for SHA-256 17b13bebc5c8671e…

MALICIOUS

PDF

72.8 KB Created: 2021-02-26 13:22:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: aaa47763971776fdf36a89759205108f SHA-1: 03fa7f6cd91d09c4114a0595c7369558b21c8817 SHA-256: 17b13bebc5c8671ea8ac87ca3c80a72fd5a70ca409e091cfc9c5ec83892fef54
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/award?keyword=air+force+reserve+leave+sell+back+form PDF link annotation
    • https://votorivoxezi.weebly.com/uploads/1/3/4/0/134095847/dukir_rufito_pozakaji.pdfIn PDF document text
    • http://acupofjacob.com/wow_classic_druid_tank_guide_deutschunhvd.pdfIn PDF document text
    • https://cdn.sqhk.co/botonerepap/j7vvEA8/77255476964.pdfIn PDF document text
    • http://particulieres-societegenerale.best/79053350284t1smq.pdfIn PDF document text
    • https://cdn.sqhk.co/sadopore/FJgihi3/new_york_city_double_decker_bus_tours_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/lididiregi/60ibjfC/bonulisukutizevenejexiw.pdfIn PDF document text
    • https://lexawuvake.weebly.com/uploads/1/3/4/6/134610488/motazeluxadow-zuresasan-dibip.pdfIn PDF document text
    • https://puxorubawi.weebly.com/uploads/1/3/5/3/135349856/zixowelazusil.pdfIn PDF document text
    • https://cdn.sqhk.co/zuronenom/iThi7ie/baby_superhero_jumpsuit.pdfIn PDF document text
    • http://mosoxiliraf.iblogger.org/gokoxikixidalekaf.pdfIn PDF document text
    • http://nububezobuto.22web.org/parts_of_speech_with_examples_and_definition.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kugikejovapav.rf.gd/fupokajexosorij.pdfIn PDF document text
    • http://jamigiboweb.rf.gd/intussusception_rch_guidelines.pdfIn PDF document text
    • http://susijul.rf.gd/jatuwosigelozojap.pdfIn PDF document text
    • http://zamonile.epizy.com/60559558750.pdfIn PDF document text
    • http://beverotunege.epizy.com/xuzijutifutagakorelew.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_off0000e20e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE20E 5280 bytes
SHA-256: d0aaa672c1346b9c505ebecb97875f69268ff1e6cccf28c3b60d785eb3e8bae2
font_01_sfnt_off0000f3ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FF 10032 bytes
SHA-256: 1469e89ae7cf1566fde88a0fa52f3d5b2186e9a1bfcf5dafd2d8db7e4f1de2dd