Malicious PDF — malware analysis report

Static analysis result for SHA-256 90e48afdba2154e0…

MALICIOUS

PDF

77.2 KB Created: 2021-02-27 22:07:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 38cf02fad75e7d33870e7b417ec9bba5 SHA-1: f57613f1603254103e17a6ec8604da9f1a465ad5 SHA-256: 90e48afdba2154e0472b23556945bdc579fc36d21ca3ae621cce2c336a303466
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://golowaki.ru/wix?keyword=download+framaroot+1.9+1+apk+for+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411921/normal_601eebf57452b.pdfIn PDF document text
    • https://cdn.sqhk.co/tubadaluzafu/khiigXR/wofotutojevuwik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451755/normal_5ffc8547d9ce8.pdfIn PDF document text
    • http://warixedivukinat.mygamesonline.org/towelojopunaxoxupiwi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494138/normal_601c79c0b348a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403560/normal_5fdc0ca7063a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484103/normal_5fca93214ebef.pdfIn PDF document text
    • http://mumolazesinidix.getenjoyment.net/periodic_table_worksheet_answers_define_a_family.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480148/normal_5fde35f8bf69a.pdfIn PDF document text
    • https://cdn.sqhk.co/relulapezele/7X6jd7i/tositodepifekufonoxoleg.pdfIn PDF document text
    • http://kakafeg.scienceontheweb.net/monitorear_red_wifi_windows_10.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/fadedosi/dell_poweredge_r640_specs.pdfIn PDF document text
    • http://satawakerexe.atwebpages.com/what_will_the_9th_dog_man_book_be_called.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/kegila.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/obituary_format_india.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/wisewevasab.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/zudurubuxoku.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/68564228746.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_off0000f0de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DE 5404 bytes
SHA-256: 657a9990ab968fe081d9665b9e7514c3da19267d7613d6ee352abfc3b50ef745
font_01_sfnt_off00010355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10355 10672 bytes
SHA-256: 5d1f6df8f6947094a8bda00173b1abc85c53a237f60157fe3bd4f90ee2002ab6