Malicious PDF — malware analysis report

Static analysis result for SHA-256 0410bb9b3e9e3730…

MALICIOUS

PDF

71.8 KB Created: 2021-02-22 18:22:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1cb49efe85ba3603bb5b76f7c9df335c SHA-1: b3bbac13b06cc4d526b1120826762881402dabfe SHA-256: 0410bb9b3e9e37303e54e7feb2238807f9be8425a7f2d2a01a01373a8b9c3d0f
254 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.
  • 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.
  • 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/aws?utm_term=how+to+connect+deltran+battery+tender In PDF document text
    • http://help-violation.com/29136860402oksdv.pdfIn PDF document text
    • http://auth02mobility.com/relajs79qh.pdfIn PDF document text
    • http://wersita.space/555289722260adwu.pdfIn PDF document text
    • https://cdn.sqhk.co/wisivelu/aiglFjb/89658776975.pdfIn PDF document text
    • http://cafe-cok.ru/how_to_write_alpha_in_maclq1j6.pdfIn PDF document text
    • https://cdn.sqhk.co/bipobulif/2wdsuie/penoluloxusazezajixapige.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/aShjZge/lavinux.pdfIn PDF document text
    • https://fasexunatosupa.weebly.com/uploads/1/3/1/6/131606354/folilajasalonuvuzo.pdfIn PDF document text
    • http://makeyourself.xyz/kitchenaid_stand_mixer_walmart_canada3rbfd.pdfIn PDF document text
    • http://greenbike.shop/but_and_therefore_ruleiklx2.pdfIn PDF document text
    • http://orbitan.fun/bifugekategobowedte4q.pdfIn PDF document text
    • https://cdn.sqhk.co/gabisolovima/Aheiaih/46670986379.pdfIn PDF document text
    • https://cdn.sqhk.co/lezubenewago/ihjchis/respect_for_freedom_speech_in_english.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/wopari/pubg_bypass_uc_hack_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/zexeke.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/13016134293.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/12940336306.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/bengali_movie_site_online.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_off0000db67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB67 5052 bytes
SHA-256: 6f9191e97710d85c225f5735f05f9f7449b06089e484508f3f36dc3d21413239
font_01_sfnt_off0000ecb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB6 10928 bytes
SHA-256: a0615b34b63af06fb7b2a0998f73c853f747a5e702e36d90ba01922c2edb0485

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