Malicious PDF — malware analysis report

Static analysis result for SHA-256 850ff112c3515d4a…

MALICIOUS

PDF

66.9 KB Created: 2021-02-15 10:43:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: cd0a88220e0dcfda7f1b1b59f0b1fde4 SHA-1: f1d1f917101dd739b617ded4422735be5e0ec86f SHA-256: 850ff112c3515d4aed39ba7dfaedfee20cfe5a83953100c33c2969c6c290592c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=ryobi+p601+router+edge+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366965/normal_6021587765081.pdfIn PDF document text
    • http://alternativeinfluencenetwork.net/trap_bunny_bubbles_rapper_net_worth6nw45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382782/normal_5fd142bc9c207.pdfIn PDF document text
    • http://copyrightprivacy.site/14617918392iuvq4.pdfIn PDF document text
    • http://b4shop.icu/kusukonusikariwereveguwawuvmq4.pdfIn PDF document text
    • https://gososeru.weebly.com/uploads/1/3/4/5/134597059/dd1156dc.pdfIn PDF document text
    • https://jobalexaxikut.weebly.com/uploads/1/3/4/8/134892204/deduw-wipuwidoteg.pdfIn PDF document text
    • https://cdn.sqhk.co/sadebupunen/3ajhhi6/73892968779.pdfIn PDF document text
    • https://cdn.sqhk.co/sexuzoropa/hheigia/95845753681.pdfIn PDF document text
    • http://ezfix.asia/chemistry_class_12_sample_papera9d45.pdfIn PDF document text
    • https://nerupeke.weebly.com/uploads/1/3/1/4/131483009/tokesaf-xekap-pesixuza-fuzarisepa.pdfIn PDF document text
    • https://xoduwotef.weebly.com/uploads/1/3/5/3/135328954/powavajovulin.pdfIn PDF document text
    • https://cdn.sqhk.co/fololekumi/ggi8ib3/piano_band_dj_download.pdfIn PDF document text
    • http://9gusevshop.website/no_man_s_sky_xbox_one_update8jhsi.pdfIn PDF document text
    • http://businessoutsourcing.org/gs_auto_clicker_directwo8b6.pdfIn PDF document text
    • http://pubgucbayim.com/lutawowutazevupizareacm.pdfIn PDF document text
    • http://quinzsy-studio.design/oracle_java_jdk_9mf0aa.pdfIn PDF document text
    • http://andyhong.blog/4176546209xkxtp.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/pazerogasarinu/konilezo.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/birthday_song_2019_free.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_off0000c937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC937 5304 bytes
SHA-256: fec8e9503b38593b072d8e1cf06758a4e19b029ba743c2d22407af8e3262347c
font_01_sfnt_off0000db64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB64 10368 bytes
SHA-256: 9f702a1b0fbce87084c9c570d56427638b64e41d81292e5a991fc6946a8ba77d