Malicious PDF — malware analysis report

Static analysis result for SHA-256 e02a4e327ec4b544…

MALICIOUS

PDF

65.2 KB Created: 2021-02-03 16:11:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9ffbff21e593e4cd878d077a18d8d989 SHA-1: 497d21d0e8a4bb177d404b3997eb82a0fcb6e0f6 SHA-256: e02a4e327ec4b544a79d1ed20a9dc51969a94c972dae1a2e7ce18054ebd8defe
254 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=payaliya+bajni+lado+piya+gana+video+ing In PDF document text
    • https://cdn-cms.f-static.net/uploads/4445880/normal_60117d5f0a748.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485570/normal_5fe88c7a92880.pdfIn PDF document text
    • http://kind-insta.site/lunch_break_time_in_spanishwcvta.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390381/normal_5fec1b783fc68.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378831/normal_5fe03a13e0025.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450151/normal_5fe35054988aa.pdfIn PDF document text
    • https://sifizebutu.weebly.com/uploads/1/3/0/8/130814914/suvelebepedof_wurelifulofawa_laxaxe.pdfIn PDF document text
    • http://foodguideblog.com/8804584830291caj.pdfIn PDF document text
    • http://svoytrylend.xyz/39746693372a18wy.pdfIn PDF document text
    • http://drovazvenigorod.ru/21_day_fix_nutrition_planpw346.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394072/normal_60057445bacd3.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/wejuvono/gedologogupepuduvapob.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/58512488286.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/berivewiverurupipeduwov.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/93448288411.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_off0000c43d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC43D 5232 bytes
SHA-256: f8c4d4e212e7f91702df326aa32138baa64e4d78a0e689c18cc4c4684f774182
font_01_sfnt_off0000d62d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD62D 9924 bytes
SHA-256: 8da1b0014f5073bb7a7b9a33097a8f73c48c334b323ea598463eb5fa353ebefd