Malicious PDF — malware analysis report

Static analysis result for SHA-256 63d7cbcdb8e2d2ff…

MALICIOUS

PDF

77.8 KB Created: 2021-02-14 04:30:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 1fa64766d1782a60f51d2c785c9e2365 SHA-1: ff53b3357c0784997ea544941439abdf0d7c72a7 SHA-256: 63d7cbcdb8e2d2ff84571fb6440e2731103909b9e14abd618a803fa8cca8eb0f
136 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
  • 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://leonvi.ru/wix?keyword=blue+collar+brilliance PDF link annotation
    • http://jixoxegige.iblogger.org/lab_safety_awareness_quiz_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410194/normal_601ce94b1fb0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482219/normal_6004c15e6fe7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495975/normal_601094f9b3c55.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402960/normal_5ffb6f87ce4be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469350/normal_5ff6ab08affc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475000/normal_601662cae8c25.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486368/normal_5ff81353e0b3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445881/normal_5ff5288d4a0b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476767/normal_60047e2ae18be.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://luloxefisamo.rf.gd/ziwukuputazevezobok.pdfIn PDF document text
    • http://wevikokuzufos.epizy.com/wajiladivowamavina.pdfIn PDF document text
    • http://fokozagizek.rf.gd/frayer_model_template_printable.pdfIn PDF document text
    • http://libejejizu.epizy.com/best_home_security_system_consumer_reports_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/neverwinter_chult_campaign_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/malaysia_income_tax_e-_filing_guide_2019.pdfIn PDF document text
    • http://legasefurat.epizy.com/bluetooth_adapter_android_example.pdfIn PDF document text
    • http://zinikifog.rf.gd/16538290507.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_off0000f55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55D 4804 bytes
SHA-256: d77b74e7e77bf76392aa49c3d5a7b44f517fecc0800444b703ac170d3e4a0e6e
font_01_sfnt_off000105c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105C2 10720 bytes
SHA-256: 17bc801aab1cf17baf519b3c395e6ed590bc73d5ba03b4cb7bc480d25ef1ce62