Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0136a5160450d52…

MALICIOUS

PDF

74.4 KB Created: 2021-03-01 19:15:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cc2fab391a551d796d8570cbaedac8bb SHA-1: ba97edea259df0fad34bb0779940445562586372 SHA-256: f0136a5160450d5241c82914cf7d210a6a03cf5c699f950845f170436f21f21a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • 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.
  • 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://seumenha.ru/wix?keyword=chapter+5+chemical+reactions+worksheet+answers PDF link annotation
    • http://sevezor.scienceontheweb.net/88926116616.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/43284199187.pdfIn PDF document text
    • https://xozejijijov.weebly.com/uploads/1/3/4/3/134315997/popadotuvoreja.pdfIn PDF document text
    • https://getivafet.weebly.com/uploads/1/3/5/9/135960962/vinadenuparemo_nasagix_nanapada.pdfIn PDF document text
    • https://lufukosiresefo.weebly.com/uploads/1/3/4/7/134707539/3474207.pdfIn PDF document text
    • http://godotobekof.scienceontheweb.net/zojewobamewunokuluxagiv.pdfIn PDF document text
    • https://pudorexejuvaw.weebly.com/uploads/1/3/1/4/131455832/rewufudagemop_vemedarunexi_telab.pdfIn PDF document text
    • https://dopeziporop.weebly.com/uploads/1/3/0/7/130739225/wuzojanamog-nepilamuguv.pdfIn PDF document text
    • https://cdn.sqhk.co/zudoputasafe/egerhhB/96063781590.pdfIn PDF document text
    • http://thedefenseforge.com/running_on_empty_jonice_webbyuovy.pdfIn PDF document text
    • https://selokifasafu.weebly.com/uploads/1/3/4/3/134383977/450d9fa8.pdfIn PDF document text
    • http://deine-gabe.com/biwasonobicywt2.pdfIn PDF document text
    • https://cdn.sqhk.co/budotedo/nCcRhj0/playtube_apk_uptodown.pdfIn PDF document text
    • https://bulabameworiw.weebly.com/uploads/1/3/4/0/134096114/pudajudugubojixoj.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/bihjfjg/dents_de_lait_qui_tombent_quel_age.pdfIn PDF document text
    • http://jivusibofonefud.mygamesonline.org/where_is_the_battery_on_a_dodge_avenger.pdfIn PDF document text
    • https://suwisabinupa.weebly.com/uploads/1/3/5/3/135351097/tikineviki_fumilu.pdfIn PDF document text
    • https://defelewag.weebly.com/uploads/1/3/2/7/132741475/6603412.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e4db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4DB 5360 bytes
SHA-256: 38d9b20ee2bbdc78d083f959fc04d608e1c53b86bc7d547bfb138562c483e448
font_01_sfnt_off0000f6f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F9 10844 bytes
SHA-256: 05cb038e62c11553a63b518e3daf8bf83bf26e3b8f65c3936831daebfa5942c5

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