Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ad3cdf5c699a6b…

MALICIOUS

PDF

70.6 KB Created: 2021-02-14 19:55:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4983963fb51ae438dd3cf41919a37f63 SHA-1: 04104b1458ee81d3f6be2a340dfcd51dc6ca15d7 SHA-256: 70ad3cdf5c699a6b8ec915cf344f4a33375146202b1838ac2d6a615f0015596f
194 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
  • 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.
  • 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=arabic+language+for+my+pc In PDF document text
    • https://static.s123-cdn-static.com/uploads/4392451/normal_5fe29216bd634.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483602/normal_5fee2c7dcc17d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469837/normal_600806719e8b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476566/normal_60099249da0cf.pdfIn PDF document text
    • http://salon-fresh1.ru/creative_writing_grade_12_moduleugo78.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaxirupunu/i7ioXHV/40814279805.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447662/normal_5fdc346c8df61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369671/normal_5ff56517100df.pdfIn PDF document text
    • https://cdn.sqhk.co/pibilebomek/r09hejc/7438730535.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492245/normal_600defca86f00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450427/normal_60066825c4974.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379054/normal_601fd7b71958b.pdfIn PDF document text
    • http://reduslim-siteofficial.site/sony_bravia_tv_remote_app_for_androidemrad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418567/normal_5fd1bb057e11b.pdfIn PDF document text
    • https://cdn.sqhk.co/jajotulix/jfjhhdw/vector_security_corporate_phone_number.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/xidazeze/personality_development_meaning_and_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/caudal_block_ultrasound_guided.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/monthly_bill_tracker_excel_template.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_off0000d7d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D2 5388 bytes
SHA-256: 4646ee93ec4bfd34751083dc4b59e588cfbff5b60265a3de2ce23aea23acfe7b
font_01_sfnt_off0000ea1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1D 10272 bytes
SHA-256: 8c9af61b95490144198d4f577b90d6c3bf99bd86875853041e4a70f64f7e72c7

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