Malicious PDF — malware analysis report

Static analysis result for SHA-256 df684b6be085894c…

MALICIOUS

PDF

69.1 KB Created: 2020-11-20 09:10:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: eeda8a970987ee869bd4852abc496d7f SHA-1: 13d130549074ab6beab1e0defeca3c4367f80715 SHA-256: df684b6be085894c4e040509fdb25dc3f9ec289758f63fa01f8f22c2648f5d7c
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://trafficel.ru/123?utm_term=vander+makeup+brushes+guide PDF link annotation
    • https://jofogeva.weebly.com/uploads/1/3/4/5/134505403/jabavalonuve.pdfIn PDF document text
    • https://xotituwidekave.weebly.com/uploads/1/3/4/5/134585458/wodira.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369793/normal_5fad6d5737069.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422373/normal_5fae576f1eb68.pdfIn PDF document text
    • https://xesapidad.weebly.com/uploads/1/3/4/3/134346602/lewutogufezare-rupovijazomezaz.pdfIn PDF document text
    • https://tumekisegazuf.weebly.com/uploads/1/3/4/6/134611428/xemenomasen-razezusa-nagej.pdfIn PDF document text
    • https://nigokozop.weebly.com/uploads/1/3/4/4/134436215/pekakinuvesu-gixigo-jugovemudo-jiriwokagerovi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374373/normal_5f97fb22e0e49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465255/normal_5fb702405c76c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402724/normal_5faa60457fb83.pdfIn PDF document text
    • https://losujawidejope.weebly.com/uploads/1/3/4/3/134310111/cae395ec6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/4082369202.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/35880573307.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/oracion_a_la_bandera_salvadorea_para_nios.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_off0000d1ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1EE 5512 bytes
SHA-256: 98a946c241055d985234fee623279ecaca6423fddb7d39a41532b6cc821058ed
font_01_sfnt_off0000e47e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47E 10364 bytes
SHA-256: 7e2d14dfb334556639609f0f80331b97ef82759ca6b2741358ab73146097d110