Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2b08bb4c745d57d…

MALICIOUS

PDF

65.6 KB Created: 2021-02-12 10:07:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d9a529a1ca63c371a329b07f9ceef19a SHA-1: 352916cb0611135c4b6764676d9b03b65aaba151 SHA-256: d2b08bb4c745d57dc20670b238b1478540689a3b7a516c0ff52a135d5ba2bcfd
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://druttle.ru/wb?keyword=iowa%20hawkeyes%20basketball%20uniforms PDF link annotation
    • http://damodudajipofem.22web.org/56193535246.pdfIn PDF document text
    • https://rowopubogapog.weebly.com/uploads/1/3/4/2/134234702/b077f667f731.pdfIn PDF document text
    • https://cdn.sqhk.co/joremeve/ljbQhaX/gw2_elementalist_build_tempest.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovusig/hghciiI/best_horror_escape_games_online_free.pdfIn PDF document text
    • https://cdn.sqhk.co/walamalesumi/QJhibij/wafer_warpage_measurement_method.pdfIn PDF document text
    • https://cdn.sqhk.co/segenapiza/cWYibSz/luxagewunejutarekun.pdfIn PDF document text
    • https://cdn.sqhk.co/velomegu/Rgd7jfz/junuvadojewexuzalu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459057/normal_5fe7c54a8454f.pdfIn PDF document text
    • https://vojubewerele.weebly.com/uploads/1/3/4/0/134013512/9440294.pdfIn PDF document text
    • https://cdn.sqhk.co/kujotukil/Ohe6Ohg/resexatamopifozojosasub.pdfIn PDF document text
    • https://cdn.sqhk.co/vaminika/Un7Uhee/16549770664.pdfIn PDF document text
    • https://cdn.sqhk.co/zolokike/jhhgjdW/viwojipamewepisi.pdfIn PDF document text
    • https://cdn.sqhk.co/lidupusumoj/jb48ggk/96559923674.pdfIn PDF document text
    • http://www.fansedge.com/iowIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jufakoxageponuz.rf.gd/wenetonoga.pdfIn PDF document text
    • http://wisexek.epizy.com/fomimedatadaruxujotugonox.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_off0000c2b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2B7 5340 bytes
SHA-256: 59064a0305a592c830f7fd0a7523fd50ef5ec3af97255ed954160259b51e00f2
font_01_sfnt_off0000d4d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D1 10700 bytes
SHA-256: ae2986f9e0a9134121ec74fe199619df3d9e779cdb57b6c5137c9b5ff42f7fad