Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b7ab4e1a118b2c…

MALICIOUS

PDF

70.7 KB Created: 2021-02-12 01:10:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 07fcda09c159eafc400deebd93faf079 SHA-1: 7fafc58d4492af337a14156b5d075d457c5160e5 SHA-256: 46b7ab4e1a118b2cc810175bdb267aabcadcb6ebe5c735cf063a5b36584a595a
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://jacksth.ru/wix?keyword=a+matter+of+state+video+worksheet+answers PDF link annotation
    • https://naranopaxak.weebly.com/uploads/1/3/4/7/134700574/jinajotubatotir_panevafati_gekonetipi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470017/normal_6005240ed181e.pdfIn PDF document text
    • http://copyright-supporthelp.com/rinegawerisodogemofippa3v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427793/normal_5fd60286467fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409417/normal_5fd7b91762a83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477401/normal_601dd7833ca42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389352/normal_5fe556bcd46d3.pdfIn PDF document text
    • https://dusonomikeka.weebly.com/uploads/1/3/2/6/132695238/bozobunelesusubaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498366/normal_601609173f64a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485313/normal_5ff2e025770a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404502/normal_5fe5117c6976c.pdfIn PDF document text
    • https://zerimesatevig.weebly.com/uploads/1/3/4/8/134879836/zuvukowuxerofu-lonadofisiliv-sejinajar.pdfIn PDF document text
    • http://purpless.vip/655872440652w7q6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408851/normal_601f83d50a892.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d8d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D0 5320 bytes
SHA-256: 11a8294cccca0857392fced5e0c2a9101766b5b8245d5599829f083b5ee8438f
font_01_sfnt_off0000ead2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD2 10184 bytes
SHA-256: ca6fe64f3080778304c4c0398def1fca4a70c43b6055be2e31741f890954d90a