Malicious PDF — malware analysis report

Static analysis result for SHA-256 132fdbb17f408d76…

MALICIOUS

PDF

71.3 KB Created: 2021-02-22 21:01:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: efc9d479b4812640dc4ee3dec0fa2960 SHA-1: ecd9072d7b9cd6bfefdae599ec5976c29c6996b9 SHA-256: 132fdbb17f408d76d78cf861d6e83e6dcb3e68b1677122962bdeae4b7c5cee61
192 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=the+sims+apk+ios In PDF document text
    • https://napopetonepew.weebly.com/uploads/1/3/1/1/131164038/8271665.pdfIn PDF document text
    • http://mrshadow.net/15492652293qfyu9.pdfIn PDF document text
    • http://buylettersonline.com/84764212774zkvjm.pdfIn PDF document text
    • https://xifasojole.weebly.com/uploads/1/3/0/8/130873801/3a28cc74e.pdfIn PDF document text
    • http://dreabling.online/16331818479127nw.pdfIn PDF document text
    • https://cdn.sqhk.co/woxiwovar/a2XIMwh/11_stone_6lb_in_lbs.pdfIn PDF document text
    • https://bitipares.weebly.com/uploads/1/3/1/3/131379103/luxogubefip_zubewupajut_guxifedixukugu_xosege.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutazomaga/fhcTiet/28587347715.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489404/normal_5fd2facebf967.pdfIn PDF document text
    • https://kaledawuvilef.weebly.com/uploads/1/3/4/7/134727412/fuzonavotutapu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448986/normal_6001c29d540bb.pdfIn PDF document text
    • https://sirususi.weebly.com/uploads/1/3/1/4/131407567/zalubuxikalolozakab.pdfIn PDF document text
    • https://cdn.sqhk.co/lixepupo/Cichg61/gejemifupiwofobagimawevak.pdfIn PDF document text
    • http://idealica-official-it.website/economia_del_modo_de_produccion_feudal1ei8h.pdfIn PDF document text
    • https://cdn.sqhk.co/dutebevon/igjgfjh/tom_s_love_letters.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464730/normal_6006a83a0b198.pdfIn PDF document text
    • https://kifofudodor.weebly.com/uploads/1/3/4/8/134878181/kipogexo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sejisetelasisel.epizy.com/birthday_card_template_funny.pdfIn PDF document text
    • http://punozow.epizy.com/vanilukadugopo.pdfIn PDF document text
    • http://nekopujopulo.rf.gd/suzojefifegevaki.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_off0000dc19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC19 4944 bytes
SHA-256: a72f2871da06d26e1b1f9e6b1a325ab61f67bde08f34dc982ca16ea3a4bc8ec7
font_01_sfnt_off0000ecc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC2 10512 bytes
SHA-256: 0c2ce743142fdfd3db069c01bca6f1f7644dacc56672210249fcc51c446cbf0e

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