Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aaeb2abbf4d67b2…

MALICIOUS

PDF

71.7 KB Created: 2021-02-18 07:18:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 69e0f06a2d72afaf36275163f2732de7 SHA-1: 298a42dd97db26b1a747ac9b660338e7f382a1e7 SHA-256: 1aaeb2abbf4d67b259746220c88bccecae452e5cf7e42e80cd02fe8fd5e77d62
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://leonvi.ru/wix?keyword=davinci+resolve+12+manual PDF link annotation
    • https://cdn.sqhk.co/duponetix/L2YdifZ/fozuguxopelekudasamole.pdfIn PDF document text
    • https://bibuzutevokad.weebly.com/uploads/1/3/4/6/134634257/aaa9a07204c8e45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387816/normal_601fd6ac21951.pdfIn PDF document text
    • https://cdn.sqhk.co/zavoragive/OihXig7/39694170442.pdfIn PDF document text
    • https://cdn.sqhk.co/tinulafi/jiiek5D/chickens_for_sale_houston_craigslist.pdfIn PDF document text
    • https://nabinavupofi.weebly.com/uploads/1/3/5/3/135350319/38899.pdfIn PDF document text
    • https://nesibebinirudeb.weebly.com/uploads/1/3/5/3/135311353/4130f62c15f.pdfIn PDF document text
    • https://selokifasafu.weebly.com/uploads/1/3/4/3/134383977/rofagewomagisusafun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460266/normal_6025e0206ad47.pdfIn PDF document text
    • https://cdn.sqhk.co/xorazasuno/klgiFZo/20433679160.pdfIn PDF document text
    • http://copyrightshelpscenters.com/hidraulica_de_canales_ejercicios_resueltos4047c.pdfIn PDF document text
    • https://falerelijiwega.weebly.com/uploads/1/3/4/6/134612416/zojesigabob-wesetolaz-xanogimurufidu.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_off0000dcd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD4 5188 bytes
SHA-256: c33a2b94ed9808683b49f91a045b52780405ad3648aed153633be7f532e7b647
font_01_sfnt_off0000ee72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE72 10336 bytes
SHA-256: 1458e2ff9958197b494755ee13e20b237c7432c26db86c8baca87e74525cce8a