Malicious PDF — malware analysis report

Static analysis result for SHA-256 22d502c08375dfa2…

MALICIOUS

PDF

74.6 KB Created: 2021-02-18 13:23:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5c51578cba995155761045a59a0948a8 SHA-1: 08c689eb7ef1a8d44da950203f06b59480b646f6 SHA-256: 22d502c08375dfa2eb2645a037d49554248a6263f1dcc228240cfa0dce1b8866
194 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
  • 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.
  • 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/123?utm_term=factors+affect+the+perception+of+pain In PDF document text
    • https://static.s123-cdn-static.com/uploads/4393628/normal_5fefd6eb678c5.pdfIn PDF document text
    • https://cdn.sqhk.co/kolokejo/igR0iiz/binagikezexunipijezona.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/hghhmjc/rockets_fired_into_israel_now.pdfIn PDF document text
    • http://zakofuta.66ghz.com/investigative_consumer_report_notification.pdfIn PDF document text
    • https://cdn.sqhk.co/fimirexuf/kU7IhgS/55475828243.pdfIn PDF document text
    • https://cdn.sqhk.co/nomazotesi/hfhgjfG/real_car_parking_mod_apk_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/gitopedevid/gfxgfhf/wizard_of_oz_costumes_adults.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503791/normal_5ff9595921796.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/xoxaneral/33922297928.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/dagew.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/organizational_culture_powerpoint_template.pdfIn PDF document text
    • http://fafovinipola.epizy.com/58207024582.pdfIn PDF document text
    • http://naxilolebepup.epizy.com/runepijigul.pdfIn PDF document text
    • http://moxododokojuke.epizy.com/9066238801.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/free_blouse_neck_design_catalogue.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_off0000ea58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA58 5024 bytes
SHA-256: 7a791cdeb44dbd4eb01d79bbb7fac14ca0bd16f0f900ded648072c35541eb8d7
font_01_sfnt_off0000fb6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6F 10032 bytes
SHA-256: c6630f8cc529273527f4dea299d3df13206c5137e9d353ad364ccc109a44c8b3