Malicious PDF — malware analysis report

Static analysis result for SHA-256 e76c5cfe3aa6d677…

MALICIOUS

PDF

71.1 KB Created: 2021-02-16 10:06:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2d062d3184593433267523f593ec2f70 SHA-1: a580abc7da882732684b3c2ffa0392e7cce4acbe SHA-256: e76c5cfe3aa6d677623dbf83532288992371d999c7fddf74ed24aa434faad7d8
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=whirlpool+accubake+gas+oven+owner%2527s+manual In PDF document text
    • http://chatik85939775.fun/batman_caca_aos_viloeszuebq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409806/normal_5fec22aa0270f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386087/normal_5ff65dae96d29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491969/normal_5fe81716c507d.pdfIn PDF document text
    • http://xexejidabame.22web.org/willingness_to_pay_for_health_insurance.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467285/normal_5fcd0a3f154f6.pdfIn PDF document text
    • https://dugumali.weebly.com/uploads/1/3/1/4/131437411/puzavapubori_pirupesakokalaw.pdfIn PDF document text
    • http://fakaripeti.xyz/john_deere_gx345_owners_manual8qlz2.pdfIn PDF document text
    • http://whysmall.space/kobalt_miter_saw_parts_listfyjnm.pdfIn PDF document text
    • http://pumba.fun/captain_america_pics07pyt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dodigemadepa.epizy.com/contact_list_template_html.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/kitewejigesudiwikewo.pdfIn PDF document text
    • http://duwimufowewis.epizy.com/1490923084.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/large_block_letter_template_printable.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_off0000d828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD828 5752 bytes
SHA-256: dc64f783dedb1e7d5ddfdaaab3deab8be3fbec5056893dd89d169c5a80445090
font_01_sfnt_off0000ebaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAA 10420 bytes
SHA-256: 6b969c36b05accd4bb1483652ca39fdd22a28a18c95162660118664ea93925d6