Malicious PDF — malware analysis report

Static analysis result for SHA-256 68851a6bb62697c6…

MALICIOUS

PDF

68.7 KB Created: 2021-02-25 23:06:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 32fbb493a7d3ca3ddb9818341edef10d SHA-1: b1dc1ec06b54fc45d6f03d9bf7acb116c1576dbd SHA-256: 68851a6bb62697c612a01db98593fb98ffdf24ba86996edd4cfef2fea2483154
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/award?keyword=the+gym+teacher+from+the+black+lagoon+reading+level PDF link annotation
    • http://ottics.ru/bluetooth-adapter_fr_mixer17vfg.pdfIn PDF document text
    • https://rinotawobuv.weebly.com/uploads/1/3/4/7/134768279/bodorolinita-tudinaveto-kurejunim-zolaxuk.pdfIn PDF document text
    • http://bristol-yalta.run/nulodevilefoxozuxuwulufixyipkh.pdfIn PDF document text
    • http://reduslim-sito.site/zaxesijifagajemeke734.pdfIn PDF document text
    • http://particulieres-societegenerale.best/498820406732e4xx.pdfIn PDF document text
    • https://vufupobuzalezu.weebly.com/uploads/1/3/4/8/134853030/8801d6207c974d9.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/davubewu/todafijigajesojaza.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/98123691456.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/beyblade_games_android_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/fewibokawapam.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/36423700031.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/wtvf_traffic_reporter.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/michelin_guide_france_2019_english_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/nigerian_worship_songs_list.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/tupuduxubirisubixedugetet.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/44978888898.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/candy_crush_soda_hack_tool_android.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/jikanopetenovoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/zavejofolalekuw.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/tubokera.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_off0000d16a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD16A 5572 bytes
SHA-256: 9470d6e157e99a618ff87b925d7f772ac8d103932e944925b58a867930cbe87e
font_01_sfnt_off0000e43e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43E 9752 bytes
SHA-256: 8125a2d24dc7acb10ea93c6326d60dea18e06b64ade814a8b54541aa5195693c

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