Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ba35e6b1805187…

MALICIOUS

PDF

72.8 KB Created: 2021-02-20 21:43:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e3473080d247e0994436be599d21be2b SHA-1: 0823170602fcb574826e6258154fef32c4ff64da SHA-256: 80ba35e6b180518731ecbe6e73ff853c405b3101be3267c1cf44b3e667aac19e
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=juicedefender+ultimate+apk PDF link annotation
    • https://gumakini.weebly.com/uploads/1/3/1/4/131414358/sudisefebewono.pdfIn PDF document text
    • https://cdn.sqhk.co/wapogade/fBigjfm/48524704519.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387419/normal_602a0d7486e7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466376/normal_601e8372cdf11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491433/normal_60175a1b8035e.pdfIn PDF document text
    • https://cdn.sqhk.co/muvotugi/fgjOji1/galimonivelumaki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460723/normal_5fef9323b8c17.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/JQjf4Q9/goat_simulator_xbox_one_local_multiplayer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tezipibuboxigo.epizy.com/eliminare_account_instagram_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/4569420574.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/publisher_template_brochure_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/segefanekitapinobawi.pdfIn PDF document text
    • http://joxaralabodegad.rf.gd/android_studio_version_control_tab_not_showing.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/maven_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/google_play_store_manually_install.pdfIn PDF document text
    • http://pagiwufuvefukuf.epizy.com/panetoxax.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_off0000dd83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD83 5176 bytes
SHA-256: 6b25b014231aa27f50643ba141fd843b2acb9a603fb36b2db79c84806aaf26d1
font_01_sfnt_off0000ef0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0D 12800 bytes
SHA-256: 841ad09d8f777133d7903598c352813d3ace3fd070b7e8ff134d16b716f4a90f

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