Malicious PDF — malware analysis report

Static analysis result for SHA-256 396e47fdacd9b888…

MALICIOUS

PDF

76.3 KB Created: 2021-02-04 12:07:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 06c36bd136cea057b1794f1088bf34cb SHA-1: 220d903a52b8a33215c930f72062f3e011896c46 SHA-256: 396e47fdacd9b888c697722ec2adc515a728cc237be6a2dc040df0d76773f9e5
244 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
  • 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 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.
  • 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://crophysi.ru/wb?keyword=bacteroides%20uniformis%20probiotic In PDF document text
    • https://cdn.sqhk.co/felinavaw/ELjijii/beat_craft_minecraft.pdfIn PDF document text
    • http://nukicew.xyz/74442252961qliak.pdfIn PDF document text
    • https://cdn.sqhk.co/fasotaluvose/Ljf6ieq/big_screen_phone_for_seniors.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/jUhfcNN/free_movies_torrent_download_websites_without_registration.pdfIn PDF document text
    • https://cdn.sqhk.co/nivurerazusa/hciawji/gefav.pdfIn PDF document text
    • https://nerilumasufut.weebly.com/uploads/1/3/1/4/131437044/8271703.pdfIn PDF document text
    • https://pedasivu.weebly.com/uploads/1/3/5/3/135387907/sarisiruxosepazem.pdfIn PDF document text
    • https://zujavezamuni.weebly.com/uploads/1/3/0/9/130969293/xuveremesevijiv_zujesigi_wufoxotodasev.pdfIn PDF document text
    • https://lifovidas.weebly.com/uploads/1/3/1/8/131856672/7758445.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/puvuronozewo.pdfIn PDF document text
    • https://fiwofufoneronup.weebly.com/uploads/1/3/1/0/131071066/mikomom_xatopinisedo_bukebuloki.pdfIn PDF document text
    • http://mavito.online/sarapunifamamipevozp8p59.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dejedizanabi.epizy.com/evermotion_archinteriors_vol_27_free.pdfIn PDF document text
    • http://najaxobefirag.epizy.com/86623150504.pdfIn PDF document text
    • http://pidosowot.epizy.com/17184194480.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_off0000efa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA9 5456 bytes
SHA-256: 07a843f36d36c59c7bf943d2f2521968ff2a733b0f1302eeb06569da6d5f0528
font_01_sfnt_off0001021a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1021A 10088 bytes
SHA-256: 3aaa30feba5d2f7040aa559c7fe8164629c599a51868c9e57406821f4ae8e36c

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