Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeec5a86ef0a9a2f…

MALICIOUS

PDF

67.4 KB Created: 2021-02-11 21:03:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a79ede748a36aad1f97e9ff6c169e431 SHA-1: cc9c6ffa0f3df559dec733509d14760d0a9e0930 SHA-256: aeec5a86ef0a9a2f11fdb4b683a58c37719501000c1d26592edfe805f34fe105
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://jottigo.ru/wix?keyword=gravity+falls+merchandise+disney PDF link annotation
    • https://wiruwopifezub.weebly.com/uploads/1/3/4/3/134345133/xubes.pdfIn PDF document text
    • https://figowemepiwe.weebly.com/uploads/1/3/1/3/131398533/2084838.pdfIn PDF document text
    • https://xagigerabep.weebly.com/uploads/1/3/1/4/131483632/vupegolusekatunolab.pdfIn PDF document text
    • http://muritolovaj.iblogger.org/my_knowledge_of_meme_template.pdfIn PDF document text
    • https://vowagogo.weebly.com/uploads/1/3/5/3/135307183/jofovebotofuve_tawovof.pdfIn PDF document text
    • https://tanibabinilez.weebly.com/uploads/1/3/4/0/134018029/c1a65283.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/ninazarila/supercell_boom_beach.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/colombia_travel_guide_blog.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/47250383393.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/84049627766.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/kexonuxubaximenuxip.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/barclaycard_online_ppi_form.pdfIn PDF document text
    • http://weguxuwe.epizy.com/jocelyn_flores_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/formyl_acetic_acid_structure.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/come_usare_android_auto_senza_cavo.pdfIn PDF document text
    • http://jibipadesubamom.epizy.com/get_your_guide_reviews_alhambra.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_off0000cb71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB71 5452 bytes
SHA-256: da76f4a31b52386481068a0316ebb388a06614f2c44b638cf13cf8991cc51935
font_01_sfnt_off0000dddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDF 10100 bytes
SHA-256: 55c537a0f69df3f233a788178dfb33d55df7b916c97979b596ae6a23de32a4b1

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