Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c0b2c911b7b71dc…

MALICIOUS

PDF

75.0 KB Created: 2021-02-03 18:23:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c37ce9bfa3d8c938d6f7f4737418c140 SHA-1: 34dd06697dc55d2adc6d38b46775cd7ec11d03cf SHA-256: 6c0b2c911b7b71dc53e7d06647fc4837e5f79a44d4fb3ea1dc2a3f5efb8fa7a1
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://jacksth.ru/123?utm_term=ranger%2527s+apprentice+book+2+read+online PDF link annotation
    • http://securityofusersdevicesonline.site/free_family_feud_templateck4o5.pdfIn PDF document text
    • http://netzamka.ru/nx_reverse_engineeringz9icp.pdfIn PDF document text
    • http://kismykeitio.best/3230779429nka1w.pdfIn PDF document text
    • http://prizinsta.site/dancing_with_the_stars_2020_tv2_wikit6emg.pdfIn PDF document text
    • http://japancar-sib.ru/wusobujetuto92h52.pdfIn PDF document text
    • http://kanshoper.site/spy_mobile_phone_online_freelqaa7.pdfIn PDF document text
    • https://luxufaxunixepu.weebly.com/uploads/1/3/4/5/134584211/3448296.pdfIn PDF document text
    • http://summ-ita.space/51305341941sddl9.pdfIn PDF document text
    • https://zobegutibeg.weebly.com/uploads/1/3/4/9/134902349/kilup_gemidulup_xodatubifafat.pdfIn PDF document text
    • http://sosed.market/outbreak_words_meaning_in_urdutt96j.pdfIn PDF document text
    • http://cashfree.store/68508165720an03y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vorawaforase.epizy.com/jipejezatuluf.pdfIn PDF document text
    • http://muresapidun.epizy.com/19163900480.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/31275076243.pdfIn PDF document text
    • http://gukewaxubi.epizy.com/bournemouth_tourist_map.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_off0000e8ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FF 5620 bytes
SHA-256: 26f4f6f7fc477adcab0e6131c604f425bbe32cd1d020a2075046f34802dedb3a
font_01_sfnt_off0000fc33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC33 10252 bytes
SHA-256: 8112cc06406fb68e7e81b6b56613d9c010c66ec78f812e2928887eb0405988a2