Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df61996da1576a9…

MALICIOUS

PDF

73.7 KB Created: 2021-02-17 04:48:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6f64a7ecfa44b61a607ea9454bee5879 SHA-1: e03e5991a4cf4088710b6331195351214d700571 SHA-256: 6df61996da1576a9893cc473502e740fb8395d81d1104ef64bfee044ee9936e8
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://baarspo.ru/wb?keyword=dewalt%2020v%20max%20hammer%20drill%20review PDF link annotation
    • http://gakmancreatures.ru/94294185057lgqts.pdfIn PDF document text
    • https://cdn.sqhk.co/zokuzadisup/7gejfih/69777322432.pdfIn PDF document text
    • https://balawuwugo.weebly.com/uploads/1/3/4/6/134622143/32ee2.pdfIn PDF document text
    • http://vakexuk.22web.org/xoginanifawixefezorovaxu.pdfIn PDF document text
    • https://cdn.sqhk.co/kapapomabu/uShcnjf/53414445211.pdfIn PDF document text
    • https://peniwifagupe.weebly.com/uploads/1/3/0/7/130738894/4900811.pdfIn PDF document text
    • https://naxizugopigonav.weebly.com/uploads/1/3/1/4/131408516/785cf13bb261.pdfIn PDF document text
    • https://cdn.sqhk.co/vojeruzujuzi/g2xihgc/vova_boutique_contact_number.pdfIn PDF document text
    • https://cdn.sqhk.co/butexuvokufo/TAhcgfA/42818984537.pdfIn PDF document text
    • https://xewulatejema.weebly.com/uploads/1/3/5/3/135345986/c6a894.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/fFm5Ege/zodolevuzo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dalonirutufitad.rf.gd/98944762652.pdfIn PDF document text
    • http://luzivamo.epizy.com/hospital_cafeteria_menu_template.pdfIn PDF document text
    • http://xaxisavubuwowa.epizy.com/tijekijaza.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/67964774098.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_off0000e330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE330 5380 bytes
SHA-256: 26c8aca3fd5942744fae8fde610aa10a8a0b5f580f4b76ac0f09e314be8d885d
font_01_sfnt_off0000f56e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF56E 10820 bytes
SHA-256: 31c79ecbc807064501628fa32963aafcd402c70183d80ac34aa8ea0d8c3fd50f