Malicious PDF — malware analysis report

Static analysis result for SHA-256 e15d80f056d567d6…

MALICIOUS

PDF

64.9 KB Created: 2021-03-02 01:51:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4160a2b8723f3c29589de15862134913 SHA-1: dfee7ea6ad6e3e28f0461c0517352cb6b200c53b SHA-256: e15d80f056d567d60e9876aeceebfc5a318e81c142d746007b2e88d923dfd837
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://gimoguvi.ru/award?keyword=garmin+nuvi+1490+kaart+update PDF link annotation
    • https://pezevibasa.weebly.com/uploads/1/3/5/3/135306661/950042.pdfIn PDF document text
    • https://wuxelulomevadi.weebly.com/uploads/1/3/4/9/134904547/5a62c09.pdfIn PDF document text
    • https://debuvubuni.weebly.com/uploads/1/3/4/8/134846467/ece283a044b8b.pdfIn PDF document text
    • http://zijogeminevuxa.iblogger.org/oregon_electric_chainsaw_sharpener_for_sale.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/tobovunoberiki/sefimosuz.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/49452240712.pdfIn PDF document text
    • http://funazowo.rf.gd/pifidazuvojixuwaxuzanufun.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/jajivupezepesafowa.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/android_obd2_app_usb.pdfIn PDF document text
    • http://xurolawewetaw.epizy.com/automatic_watch_faces.pdfIn PDF document text
    • https://s3.amazonaws.com/sogovekevi/11961552852.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/52810315783.pdfIn PDF document text
    • http://rusapejuvovu.epizy.com/extranodal_lymphoma_contouring_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/kafises/candy_crush_game_android_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/beds_are_burning_drum_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/idm_chrome_extension_file.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_off0000c361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC361 5488 bytes
SHA-256: f3ddb5e050febbafbfcf27b12e4885a8649082f528cc0813a91c2c55acc8b90b
font_01_sfnt_off0000d609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD609 9544 bytes
SHA-256: 3a8ca781d5c607a91f1d81a79cf5cfeb08668601b86f91291afaa29e2df190f6