Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb014d03a0b1b28c…

MALICIOUS

PDF

73.2 KB Created: 2021-02-26 05:41:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 75f0d7b176515e7be8c159a17be33f18 SHA-1: 2fce4ffb9430b40d737460ba227e960f23efc070 SHA-256: cb014d03a0b1b28c3c8eb409dd06c2d079e1c6716e9a2b419848c959544ab0c5
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://baarspo.ru/award?keyword=roku+streaming+stick+remote+battery+life PDF link annotation
    • https://xododasewa.weebly.com/uploads/1/3/4/6/134600374/wolinutezaze.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxabofapuw/3wjUjja/love_academy_mobile_game_all_pictures.pdfIn PDF document text
    • https://cdn.sqhk.co/matelasoguje/ubMshgt/jeborobotoval.pdfIn PDF document text
    • https://xobagosuwetir.weebly.com/uploads/1/3/2/6/132680986/guzarejuwosow_lowukavevesi_megul_roxete.pdfIn PDF document text
    • https://cdn.sqhk.co/bipadifudame/jhjcPM3/62140156816.pdfIn PDF document text
    • http://sizoxuk.22web.org/54512474853.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413575/normal_60092475b93b8.pdfIn PDF document text
    • https://wanuwajazil.weebly.com/uploads/1/3/4/8/134899981/55341.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/xufujofaleki/19531840614.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/cam_edilizia.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/using_contact_cement_in_cold_weather.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/cdr_file_indian_god.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_off0000e1a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A1 5512 bytes
SHA-256: d0ece696126f90a3beeb45ae127f7da5ed2d5dce08aaaffc1615f00a97ef69a0
font_01_sfnt_off0000f460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF460 10412 bytes
SHA-256: e5a3833f75234c7b23d34396e8c098f97d7f8f9d2b389d2c0316125a113916ef