Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d7d599a64d2e3b5…

MALICIOUS

PDF

66.0 KB Created: 2021-02-14 00:29:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7be2e3ca3129451fcd1939ee08fa3910 SHA-1: 97c8814eee1ad8089999313bdcbbc511fa8f5ef3 SHA-256: 3d7d599a64d2e3b5f52581dd5462532e9cc7e7d864ff28af3ebf99cda12d62ac
196 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
  • 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.
  • 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://bologen.ru/wix?keyword=how+to+pass+riddle+school+5 PDF link annotation
    • http://tegogufe.22web.org/bhaskar_oru_rascal_movie_free_hd.pdfIn PDF document text
    • http://ranomurivokav.22web.org/webstorm_angular_live_templates.pdfIn PDF document text
    • https://muwunijika.weebly.com/uploads/1/3/1/3/131398004/f2f205b7eadeeb9.pdfIn PDF document text
    • https://xovawezovikax.weebly.com/uploads/1/3/0/9/130969403/naforofi_xuzojawa_bepap_karowej.pdfIn PDF document text
    • https://rijagadufe.weebly.com/uploads/1/3/1/6/131606992/badinibixuva.pdfIn PDF document text
    • https://lotefexikig.weebly.com/uploads/1/3/4/0/134097130/wurogubaxazij_wutigelovifi_kixamuzepose.pdfIn PDF document text
    • http://fusexetop.22web.org/light_bulb_guide_car.pdfIn PDF document text
    • https://pizovepe.weebly.com/uploads/1/3/5/3/135323062/lowudususisiz-simewoligim.pdfIn PDF document text
    • https://wididalinur.weebly.com/uploads/1/3/3/9/133986726/4461917.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wibenuke.epizy.com/67762579183.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/bebepibofokew.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/nevada_annulment_forms_papers.pdfIn PDF document text
    • http://buwozefavimim.epizy.com/60418440284.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/catalyst_2960x-_24ps-_l_datasheet.pdfIn PDF document text
    • http://gigolovumiguse.rf.gd/arnold_chiari_malformation_type_2_radio.pdfIn PDF document text
    • http://mifetominugumow.epizy.com/riwofo.pdfIn PDF document text
    • http://vabuperupijod.epizy.com/ncaa_basketball_picks_bleacher_report.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/19755550487.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/91074642996.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_off0000c5b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5B4 5340 bytes
SHA-256: 3918287e298e90de7ebbf145c24c661f7371ece263b799c1bb53a6f820f99261
font_01_sfnt_off0000d7e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E5 10408 bytes
SHA-256: 695b27614f27e2c92851fa91398ac897440439447a7e37891522fb1bb6120945