Malicious PDF — malware analysis report

Static analysis result for SHA-256 27afda673664d14a…

MALICIOUS

PDF

66.7 KB Created: 2021-02-10 18:02:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ce90dec9fa3b7162133080de07ebbe38 SHA-1: 6157e044f6e626f6aab18aa112a15e281c41c6db SHA-256: 27afda673664d14a28630a4407877805251675dedef5dc7bca5169315e00bb4b
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://maypoin.ru/123?utm_term=translating+word+equations+worksheet PDF link annotation
    • https://cdn.sqhk.co/wisaputal/hgehbhc/berry_dark_browser_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373768/normal_6004f723bd26d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378165/normal_60009b77dc228.pdfIn PDF document text
    • https://cdn.sqhk.co/wejupexuput/Sohjgg7/18519340371.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416789/normal_6020ba2229d23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371523/normal_60220fbf232e9.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwaseja/MgDjeid/power_washer_black_friday_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/raxuzuvuluf/yjc2gjg/stormfall_rise_of_balur_android_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493245/normal_5ff4b75c97dc0.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosexotak/iihclib/claw_machine_toy_prizes_for_adults.pdfIn PDF document text
    • https://cdn.sqhk.co/pobumepova/Jegdhi7/42254557917.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446174/normal_601b0e0e11235.pdfIn PDF document text
    • https://cdn.sqhk.co/labifikup/hgj9jdZ/alien_isolation_art_style.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383924/normal_5fe911b2de7b6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vinagakibozune.rf.gd/adobe_camera_raw_cs6_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/the_deduction_guide.pdfIn PDF document text
    • http://zunebodiz.epizy.com/incili_gastronomi_rehberi.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/nervio_glosofaringeo.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_off0000c778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC778 5320 bytes
SHA-256: 560a5d9bc79bddaf7f48872e944a43af6c3813dd3d5e9006f760a26da19aec64
font_01_sfnt_off0000d989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD989 10536 bytes
SHA-256: 1b3bf47d046996e17407555731136f893d91daa02285abca323a66653ce885fe