Malicious PDF — malware analysis report

Static analysis result for SHA-256 44a508b06b0fc91b…

MALICIOUS

PDF

64.6 KB Created: 2021-02-05 09:20:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a73f4099636210cc71a1a00640d4cd5e SHA-1: 1701347db7d03b54b8128de1cfb008bf43b291d3 SHA-256: 44a508b06b0fc91b9c337f76f790373abcb17383881c9a9effbee4026d599792
126 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
  • 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/aws?utm_term=armorless+preformed+joint+seal PDF link annotation
    • https://sefubokadizafa.weebly.com/uploads/1/3/4/8/134880044/tenazale-nozokuvap-dagexakixumoga-vipiputu.pdfIn PDF document text
    • http://hesap-al-sat.com/simulazione_test_bocconigstrg.pdfIn PDF document text
    • http://berozava.iblogger.org/rafibudilobin.pdfIn PDF document text
    • http://grenkasalo4.xyz/python_language_in_tamilzawhu.pdfIn PDF document text
    • http://akmurzina.com/william_burroughs_blade_runnerwx3cj.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/my_way_piano_solo_sheet_musicvpu4t.pdfIn PDF document text
    • https://vabadagijuruka.weebly.com/uploads/1/3/1/8/131856539/vofetaxutu_tadix.pdfIn PDF document text
    • http://lumacy.site/43930679803i5ze9.pdfIn PDF document text
    • http://milky-rp.space/8888243989yqhwj.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/henhiCZ/53540322555.pdfIn PDF document text
    • https://cdn.sqhk.co/pixisuja/iiwjj6e/kigote.pdfIn PDF document text
    • http://ru-en.xyz/321680083129pgdp.pdfIn PDF document text
    • http://seamanygau.best/abrsm_piano_scales_and_arpeggiospojd0.pdfIn PDF document text
    • https://lokabema.weebly.com/uploads/1/3/4/1/134109183/2451478.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zividovapajawuv.epizy.com/72382795228.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_off0000bfd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFD7 5252 bytes
SHA-256: 898fa7c8ed3ac4e96ebc3eea510a0d6d70f5f644917a430d4a04bc98e3b53fbe
font_01_sfnt_off0000d19f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19F 10680 bytes
SHA-256: 63c9bb00e477fbb1d2cbab682c94e06bd5710ee5abcde28f74c36e9d4088505d