Malicious PDF — malware analysis report

Static analysis result for SHA-256 54a6d5993d712a47…

MALICIOUS

PDF

70.0 KB Created: 2021-02-04 06:38:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 78513e7240b94968007bbb5c19b4efb3 SHA-1: de0ffb327f64de834f28424cdbd7d8de4ac3b1f1 SHA-256: 54a6d5993d712a47f86f4219b116497f1d4b57c83e8eef047a0a7bb43bde0f03
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/wb?keyword=ssc.%20nic.%20in%20answer%20key%202019%20cgl PDF link annotation
    • https://cdn.sqhk.co/zotofoza/aichdVc/duzufanarubagav.pdfIn PDF document text
    • https://cdn.sqhk.co/jagapifa/ijjgbpA/22638636641.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/O94ieja/74272253376.pdfIn PDF document text
    • https://cdn.sqhk.co/rijomawonuj/j3CTQTl/frogger_2_swampy_revenge_xbox_360.pdfIn PDF document text
    • https://cdn.sqhk.co/retesixabe/hciaDhc/t-_mobile_deals_on_iphone_12_pro_max.pdfIn PDF document text
    • https://cdn.sqhk.co/nefakovuwot/hhiEUic/18741334614.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/jeduzizonox/canon_ip2770_driver_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/xigumukojoxokomakozalaw.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/maths_syllabus.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/dinosaur_baby_shower_sheet_cakes.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/vertebrate_palaeontology.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/jefipanaditavitunubut.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/modern_cv_template_pages.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/58200501504.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/arthritis_uk_neck_pain.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_off0000d218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD218 5844 bytes
SHA-256: fcd9459dc0bdad86cce3c47e52cbccd3e3ed4d9477b59744d6ab483c522b05dd
font_01_sfnt_off0000e632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE632 10972 bytes
SHA-256: 8e777266572269e9ee4b213aab3bdb76ae3192e05720e5b9ed8dac9f62d4c8e3

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