Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e99c663751f3b46…

MALICIOUS

PDF

71.9 KB Created: 2021-03-04 11:51:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: aba56adbaabfbf2943b3d1ec2eafff48 SHA-1: c14aeee29af21e3f2531df997d2fb2ead5c13c19 SHA-256: 6e99c663751f3b462ed31296f71ab121dd3581a0c088db508b00d6f3162c88c4
214 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://crophysi.ru/wix?keyword=digitech+fs3x+instructions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4481510/normal_602e2837658c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483083/normal_5fddc565d70ec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392647/normal_6004751dab6b3.pdfIn PDF document text
    • https://fogojokiverowur.weebly.com/uploads/1/3/0/9/130969702/8b5eb1c38cfe47d.pdfIn PDF document text
    • https://xibomuwupipufa.weebly.com/uploads/1/3/5/3/135389044/4573603.pdfIn PDF document text
    • http://kosamaritaj.getenjoyment.net/jacques_derrida_of_grammatology_summary.pdfIn PDF document text
    • https://cdn.sqhk.co/vexelomuveg/1bQWQPR/63210614906.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/pudukiziju.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/mNZL1hh/clover_dashboard_refund.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453105/normal_60021a3186eb1.pdfIn PDF document text
    • https://cdn.sqhk.co/ximirujusuxo/2zidjaD/sedanazasejerevuj.pdfIn PDF document text
    • https://dadikokaw.weebly.com/uploads/1/3/5/3/135347495/nubupiduranij.pdfIn PDF document text
    • https://xizirasifeda.weebly.com/uploads/1/3/4/3/134344010/4594033.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sazomo/non_linear_narrative_structure_definition.pdfIn PDF document text
    • http://sabiwilurase.atwebpages.com/zitibebuborutirepenotesu.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/givironapel.pdfIn PDF document text
    • http://vebusatoro.atwebpages.com/scag_turf_tiger_35_hp_vanguard_oil_change.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/17228516924.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/59938913367.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFDE 5012 bytes
SHA-256: 95858502608006718d48ca10eaf099272c4ea9005050f64c19eea60568b3eff7
font_01_sfnt_off0000e0f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F5 10304 bytes
SHA-256: 1c1632ba9037a720e940126f84ad59c2c8904c7d06f706f01ff232950a1f93e2
font_02_sfnt_off00010403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10403 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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