Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc033effe5c39b1…

MALICIOUS

PDF

62.4 KB Created: 2021-01-28 02:42:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8b08c65e1915a072b175851cfcb32169 SHA-1: 038d40b1948b11a6b31a17e3bd36709daeee221e SHA-256: 9fc033effe5c39b1d2a96fa52022946369c949639f9de1c119db536a5f86c0a5
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/aws?utm_term=commas+in+a+series+worksheet+3rd+grade PDF link annotation
    • https://fosuwelu.weebly.com/uploads/1/3/2/6/132695698/bijovaribag.pdfIn PDF document text
    • http://byseles.xyz/87779681713ennia.pdfIn PDF document text
    • http://rojenugilin.22web.org/20209124167.pdfIn PDF document text
    • https://dirivabekere.weebly.com/uploads/1/3/3/9/133999762/b77e1e306223.pdfIn PDF document text
    • http://podarokinsta.site/34939221069545zx.pdfIn PDF document text
    • http://bullbananavannaone.xyz/kifusvehj6.pdfIn PDF document text
    • https://gelupolo.weebly.com/uploads/1/3/5/3/135314506/6516511.pdfIn PDF document text
    • https://cdn.sqhk.co/vuxitiwawi/ia8oKie/49325260078.pdfIn PDF document text
    • http://idealicaitalia-oficial.site/jakixunuvipigetelitulowobgjn31.pdfIn PDF document text
    • http://idealicacolumbia.site/armor_beast_arcade_fighting_2_mod_apk3viu7.pdfIn PDF document text
    • https://biramufon.weebly.com/uploads/1/3/4/7/134775887/1f53b2e8d41081.pdfIn PDF document text
    • https://vufupobuzalezu.weebly.com/uploads/1/3/4/8/134853030/7125809.pdfIn PDF document text
    • https://xovobinawulum.weebly.com/uploads/1/3/4/8/134883327/podadazus.pdfIn PDF document text
    • http://tdsevsvet.ru/8_ball_pool_online_hack_coins_and_cashezfhh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zepakom.rf.gd/demurarexojasegekerafin.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_off0000b7a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7A7 5432 bytes
SHA-256: 4fbeb8825df3078e480c872473d8013f1d881716e7d9b719e6fa8a687cb49cce
font_01_sfnt_off0000ca03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA03 10212 bytes
SHA-256: 3c840920e46fdba1f3a785ddda1a487b436d5e46608402566d9e85259447d193