Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae2dfcef9003b1c5…

MALICIOUS

PDF

81.2 KB Created: 2021-01-25 00:08:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a8266a7ce37d25f9806d4e0e3510272f SHA-1: 63dd5690b5e7ee67756a3a345050e52a077c30a9 SHA-256: ae2dfcef9003b1c582fa7fb42a4aba33034e220fea8ed9bf0caae556fbf95d91
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=graceling+kristin+cashore+pdf+espa%25C3%25B1ol PDF link annotation
    • https://warubexe.weebly.com/uploads/1/3/4/6/134647576/jodegotokajibeg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417523/normal_5fcb1325efa2a.pdfIn PDF document text
    • https://migobagola.weebly.com/uploads/1/3/4/8/134874333/fusopurigasev_sugirevitoziz_noborulomewugu.pdfIn PDF document text
    • https://tamejozapana.weebly.com/uploads/1/3/2/8/132814544/vijosimamivavarawiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415964/normal_5fed5cf348bca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411512/normal_5ffdb123761af.pdfIn PDF document text
    • https://nelibijejukeli.weebly.com/uploads/1/3/1/4/131437261/6c17b5.pdfIn PDF document text
    • https://xigobiniliw.weebly.com/uploads/1/3/5/2/135298108/siludeliderevitipozu.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/vatosolikijike/after_effects_cc_2017_free_templates.pdfIn PDF document text
    • http://golunelew.epizy.com/60749195507.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/93095540176.pdfIn PDF document text
    • http://zenejifawulo.epizy.com/clackamas_county_courthouse_forms.pdfIn PDF document text
    • http://kazaxese.epizy.com/5._snf_blme_ilemi_testleri.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/dress_attire_for_formal_wedding.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/gidom.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_off0000f2af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AF 5724 bytes
SHA-256: e4427c1c3066f48bf50e7acb512ee2ee455a750101615e6b99d9d0839030ee19
font_01_sfnt_off000105e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105E4 15404 bytes
SHA-256: 96c2084c36e98ad9dc7012c6d56027a8876405cb094d04efc4c14d9e98322522