Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ddff34dce852c8…

MALICIOUS

PDF

67.9 KB Created: 2021-02-09 01:59:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 751facc480d4d0922bc4740ee46aa389 SHA-1: 3e575530ddd1c30b20146ca034ff43aea803fac3 SHA-256: 96ddff34dce852c8b9cad468eed90cc50c1a55da2c42b4be1e24feba5cd72fe9
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wb?keyword=interview%20assessment%20form%20template PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4447096/normal_5fe01f9112003.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409396/normal_6006a7310691f.pdfIn PDF document text
    • http://gododerur.66ghz.com/lixizejowosij.pdfIn PDF document text
    • https://cdn.sqhk.co/jivomawufem/JM8shcf/43105830668.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487625/normal_5ff802d4b8a98.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/rCkWpjh/idle_factory_tycoon_hack_mod_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388405/normal_5fde299f292cf.pdfIn PDF document text
    • http://vesimawamom.66ghz.com/64343000691.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476601/normal_6019594e01ee3.pdfIn PDF document text
    • https://cdn.sqhk.co/xufaribo/wFRhavn/kiss_of_war_trailer_ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378382/normal_5fff139ab58e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393181/normal_600a19901343a.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/luworizesupox/mobefapafedejuxojopegiw.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/69485914680.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/tegujofamuvukuzazakigip.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_off0000cedb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEDB 5136 bytes
SHA-256: 17183a5371774f52867c620d857af5b4da0b1afebcfe01bc7dd26bf4df760123
font_01_sfnt_off0000e055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE055 10180 bytes
SHA-256: 54a3610a80493c8b9cb45637ff9466bf147d73a98df5e6565188d24ff931dbc7