Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a53e1633c323cb9…

MALICIOUS

PDF

72.1 KB Created: 2021-03-03 20:04:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 63040fe9fb804d565cb30bc147600ef8 SHA-1: 634293881a56be40e12287981a9f1dbc806b18c3 SHA-256: 0a53e1633c323cb982bfe4235e7fdd1032e4c63291c73762f920e38be044c5f2
156 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
  • 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.
  • 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://lozipotod.ru/wix?keyword=brown+and+crisp+microwave+cooking+bags PDF link annotation
    • https://cdn.sqhk.co/bozogekeji/iXnihIJ/fall_guys_mobile_download.pdfIn PDF document text
    • https://cdn.sqhk.co/saseponirifa/idSaPjd/jilapidinebarabo.pdfIn PDF document text
    • https://salexutoxor.weebly.com/uploads/1/3/4/7/134761189/1559739.pdfIn PDF document text
    • https://cdn.sqhk.co/nozedimasav/U9Bghgj/jojalewemofesawun.pdfIn PDF document text
    • http://xosikuxevezi.22web.org/84369097675.pdfIn PDF document text
    • https://cdn.sqhk.co/satukevaguka/jfjcUgd/mukurarazuvufedejaxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473637/normal_603907564ad29.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/lodazojamuva/56908906907.pdfIn PDF document text
    • http://javajese.epizy.com/esp8266_arduino_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/civ_4_colonization_beginner_s_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/33620617423.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/kabootar_bazi_song_punjabi.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/joroxolexajuzuderiva.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/rental_credit_application_form.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_off0000da93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA93 5768 bytes
SHA-256: f2d624164536ab7c89278915dfe1c463c03bb39ed054b4ebb44b3590bb686350
font_01_sfnt_off0000ee3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3D 10780 bytes
SHA-256: 63a066bd1cea506c6931d7bed1e8e3dedf326901c2087026f17ce2142abb9e5e