Malicious PDF — malware analysis report

Static analysis result for SHA-256 438e602b741ff7e1…

MALICIOUS

PDF

67.4 KB Created: 2021-03-01 04:07:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9669811dbde93feee0c05e8305b12576 SHA-1: d72affcede5714be98bd5b517cc59c163aa777de SHA-256: 438e602b741ff7e1bdbdf44c42a7e2c811a34c946f4ef3ed701726b6c3861a3e
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://xajibur.ru/award?keyword=the+end+of+the+world+lyrics+julie+london PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421641/normal_5ff5f949626ec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385859/normal_5fefe6b9c3d41.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422136/normal_5ff1f468a10e0.pdfIn PDF document text
    • http://love-your-lips.online/93341416537qpvw2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450249/normal_602090bebd499.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/jazupujuviwazowib.pdfIn PDF document text
    • https://cdn.sqhk.co/zinoliwomi/fggcur0/lupagapixagu.pdfIn PDF document text
    • https://xuxurebero.weebly.com/uploads/1/3/4/6/134673100/8202141.pdfIn PDF document text
    • http://health-top.ru/c_programming_language_2nd_edition_githuboyade.pdfIn PDF document text
    • https://cdn.sqhk.co/motanunika/Qgdjjja/5438605663.pdfIn PDF document text
    • https://fodonisegijiwos.weebly.com/uploads/1/3/1/4/131437376/xeruvapiwopezakaku.pdfIn PDF document text
    • https://cdn.sqhk.co/jowepotoxum/hajahb3/33105563860.pdfIn PDF document text
    • https://wimelavejitovuv.weebly.com/uploads/1/3/4/5/134597731/dawabu_zurelebexeb_papagod_vumevima.pdfIn PDF document text
    • https://jokuvaput.weebly.com/uploads/1/3/4/5/134589987/nenugirotora.pdfIn PDF document text
    • https://cdn.sqhk.co/tukawezezo/Xg7odW0/second_hand_clothes_app_netherlands.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495999/normal_600b63283da5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450634/normal_5fed0c223eddf.pdfIn PDF document text
    • http://numulul.mygamesonline.org/87333847806.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444884/normal_6036582f2287b.pdfIn PDF document text
    • https://kenaveduku.weebly.com/uploads/1/3/0/8/130813649/7b7c3ba3482d.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_off0000cb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB33 5120 bytes
SHA-256: 4c2d29515f341745f90e4766cd56a334c2a030888b6af4d2427fe9ffc6325c39
font_01_sfnt_off0000dcbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBC 10272 bytes
SHA-256: e82ad632344c6be8656666e48594569e13a77fdc62c5e38573924916e3d4ee68

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