Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f77ced9a0b63d64…

MALICIOUS

PDF

70.7 KB Created: 2021-02-17 04:43:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9377e371986e23db2d7d19a327950bc3 SHA-1: 98c18169e082e416343f2f021230ad3942a688eb SHA-256: 2f77ced9a0b63d64d9927e0a60c9ef5bfe5196b42a8bad6420a522d45af57d78
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/aws?utm_term=problems+from+philosophy+3rd+edition+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368225/normal_60203a2e36eec.pdfIn PDF document text
    • http://nejamaranidirit.22web.org/algorithme_pcime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411490/normal_601677c78773b.pdfIn PDF document text
    • http://befenero.22web.org/xepudazotipaxavu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471992/normal_60085a7a26a5f.pdfIn PDF document text
    • https://kowijifeno.weebly.com/uploads/1/3/5/3/135390944/7798801.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388160/normal_5fd750365b111.pdfIn PDF document text
    • https://fomoxizukewoviw.weebly.com/uploads/1/3/0/7/130739072/xidutorep_jotamu_vofedinade_xuvez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xafasefulunasa.epizy.com/all_clad_induction_burner_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kafises/the_logo_quiz_level_10_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/85723007984.pdfIn PDF document text
    • http://fetufebutegiv.rf.gd/2026462112.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/zevederigoditupir.pdfIn PDF document text
    • http://kitukogoxav.epizy.com/25857348077.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/sixifiravikoturezan.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_off0000d34c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD34C 5780 bytes
SHA-256: a4c8d7de9f79ca2a0ee60b9d913ba6511a9c5e8c6d3448f9a361363d4ea8b041
font_01_sfnt_off0000e6df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DF 11556 bytes
SHA-256: 7e36abbf67ab5e6f1ecf6943d53e6e6472438064e9a1342dc83050763b99e9b6

Open this report in the interactive analyzer, or submit your own file for analysis.