Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0b54715d257cbdb…

MALICIOUS

PDF

70.0 KB Created: 2021-03-03 15:57:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a612098dee3ae4758cd428df758ab166 SHA-1: 451f9cdf30bff511201b9911c7b697b5dec297a4 SHA-256: b0b54715d257cbdb9130bbe4c3b1f6a0779976fa0c7cb95b9aee468bb6fb5d8f
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://xajibur.ru/award?keyword=specialized+speedzone+sport+wired+manual PDF link annotation
    • http://mon-cmbretagne.best/tb_sheets_lyrics_meaningumv9w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459628/normal_5fff70180f5b9.pdfIn PDF document text
    • http://fullstacket.online/garijoxogotopubivimopoki0wuw.pdfIn PDF document text
    • https://gokejubekilebu.weebly.com/uploads/1/3/4/3/134376129/5525984.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454556/normal_6033587ee4212.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393901/normal_600defbd83a1d.pdfIn PDF document text
    • http://xeeewq.xyz/easy_pumpkin_carving_face_templates7lalg.pdfIn PDF document text
    • http://temilops.xyz/hewlett_packard_laserjet_2100_toner_cartridgedco7s.pdfIn PDF document text
    • http://iciapp.xyz/lopatap958y6.pdfIn PDF document text
    • https://zuxidonav.weebly.com/uploads/1/3/4/8/134867872/ad92a811d7f3.pdfIn PDF document text
    • https://dawasaga.weebly.com/uploads/1/3/0/9/130969366/1802653.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405437/normal_5ff459330919d.pdfIn PDF document text
    • http://onlineeshop24.xyz/bodoridoke9k1vl.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/tedowafomaru/accounting_terms_in_english_and_spanish_crochet.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/irctc_train_ticket_booking_form.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/questions_about_lord_of_the_flies.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/lajawewasenuk.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/crystal_reports_viewer_backwards_compatibility.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/hidden_bars_melbourne_broadsheet.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_off0000d421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD421 5464 bytes
SHA-256: e2f1f9222494078fe89db7b0ee0b29b3aa104bcd9ab12ab231858a60c9a34826
font_01_sfnt_off0000e6bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6BC 10628 bytes
SHA-256: 8f0c72e05bd93d69d5d846f79f9a26139d43fcf537bfb99662f2a02fcd6868e1