Malicious PDF — malware analysis report

Static analysis result for SHA-256 d27a489257302451…

MALICIOUS

PDF

67.1 KB Created: 2021-02-23 23:13:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a7d2db9e099892b20abe938a93dfe76b SHA-1: 4a35268ca0c5de28571d3f0ad268199f4953f60b SHA-256: d27a489257302451b64fd2c66f5e74eace9d9dc48951a0f2e605d1266b382262
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://druttle.ru/wix?keyword=omea+district+4 PDF link annotation
    • https://cdn.sqhk.co/sudidoxa/hiLjeic/south_america_map_game_puzzle.pdfIn PDF document text
    • https://cdn.sqhk.co/setuboluraje/e6Xghhg/super_hexagon_online_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/dugixikisim/hgUBjjq/zelebatozamakewe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377410/normal_5fe302b554172.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445106/normal_6027bd0964393.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459636/normal_5fde6ea93ad09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402481/normal_6010565b77202.pdfIn PDF document text
    • https://cdn.sqhk.co/tenotitur/djgl6MN/gadasaxewur.pdfIn PDF document text
    • https://cdn.sqhk.co/kugoxepif/cZmhdgc/storybeat_premium_apk_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419832/normal_6008d9e3eaf4b.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/XPjgsk2/solar_system_map.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/haVhchi/shared_shopping_list_app_iphone_and_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492246/normal_601d14b3bd7ae.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/najubu/jogokuxar.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/ultrasound_guided_genicular_nerve_block_technique.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/devakofajiwimopamix.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_off0000bf6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF6D 4740 bytes
SHA-256: 1ba016c947c6615be5d291960423213e601d22c3bf7e3d849343eb41991228db
font_01_sfnt_off0000cf8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8C 10028 bytes
SHA-256: ef32485ec448d8b69a0ff5d170cbb47b8a7a9b7262e028ed1ba581d52cedcad0
font_02_sfnt_off0000f1f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F0 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333