Malicious PDF — malware analysis report

Static analysis result for SHA-256 c443b1afbab16e94…

MALICIOUS

PDF

70.5 KB Created: 2021-02-16 13:13:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1ab8c8990881ab9afbda31a23a81b605 SHA-1: b5fcb14e2f6b9b11f462090464afe6723deb9477 SHA-256: c443b1afbab16e94a17e2823e06adba645d4fe995cd4a3107696553f328fa98e
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=boxhead+3+player+unblocked PDF link annotation
    • https://livakazogoje.weebly.com/uploads/1/3/4/6/134622539/5769952.pdfIn PDF document text
    • https://xidoxuzi.weebly.com/uploads/1/3/4/7/134707988/lamagel-meden-koxun.pdfIn PDF document text
    • https://pegiromilu.weebly.com/uploads/1/3/4/6/134683304/6027508.pdfIn PDF document text
    • https://namunobuwuper.weebly.com/uploads/1/3/0/7/130776476/rulola-zajulitonujaje-bebovam-buxiwukewobezup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416514/normal_5fe3ba5a30fb6.pdfIn PDF document text
    • https://werikaduf.weebly.com/uploads/1/3/4/4/134483952/gemifa-tosiwebulaka-buzepaz-medexofuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446649/normal_602960a689fda.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/remuv/83833940790.pdfIn PDF document text
    • http://nonepajurela.rf.gd/minix_android_box_remote_app.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/anjaan_tamil_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/68082023480.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/remo_audio_songs_ing_telugu_lo.pdfIn PDF document text
    • http://xadifoduboboriv.rf.gd/jquery_ui_datepicker_calendar_icon.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/huawei_p9_lite_adb_driver.pdfIn PDF document text
    • http://tewalilakoj.rf.gd/gisuzopudozerutus.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_off0000d3aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3AA 5572 bytes
SHA-256: b7f9c25719d0db94730ced2030272ad55f4b840efeba005a5532e5a36cd9627d
font_01_sfnt_off0000e69f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69F 11680 bytes
SHA-256: 0e70f334ddd336b852e8615dc53a4e90b59b83eae94380fa2eb6118e34bb7871