Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6aa00f2052568ee…

MALICIOUS

PDF

69.5 KB Created: 2021-02-25 04:41:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: efe338c3e01db03a1b9d87aaed0a99ad SHA-1: 17e991d0a1f49811c5d5c20b951eae2e4b53a7b1 SHA-256: d6aa00f2052568eedb4a01e8020521b5707462c33450d1ceaf19645d5f4f77fb
214 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://yafferge.ru/wb?keyword=fender%20mustang%20gt%2040%20amplifier%20cover%20black In PDF document text
    • https://static.s123-cdn-static.com/uploads/4379742/normal_6008de9c49e0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458614/normal_6005911167feb.pdfIn PDF document text
    • http://manekobe.22web.org/car_racing_games_free_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426063/normal_5fe1a75c350b4.pdfIn PDF document text
    • http://sunakijabe.sportsontheweb.net/jbl_eon_615_owners_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380383/normal_5ff06b7d53932.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408324/normal_5fc78f8495592.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485329/normal_5ff135c1a32b2.pdfIn PDF document text
    • http://fofiwafajelerax.sportsontheweb.net/sotejobemog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388173/normal_600808cd08b88.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455684/normal_5ffd805e384fc.pdfIn PDF document text
    • http://gepexoliv.medianewsonline.com/narenodazidudubilaxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481397/normal_601b8debc0b0d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://derekage.epizy.com/outlook_email_template_image_size.pdfIn PDF document text
    • http://mowumaja.epizy.com/jopezan.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_off0000ce35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE35 5924 bytes
SHA-256: 1809a84d901a2900b35bfc0c79d80e047ef91e4e1a07d32b6966baa83c293988
font_01_sfnt_off0000e25a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25A 11416 bytes
SHA-256: 8b2adc3f96ba6b4f781ac35a56a7856d18818a5932fdbc49e65677a996f03715