Malicious PDF — malware analysis report

Static analysis result for SHA-256 a163e96e6972372c…

MALICIOUS

PDF

71.8 KB Created: 2021-03-11 07:59:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d69a94ac5c19436638551933289ad84e SHA-1: 6532fd24320f28ab79c2e6bc8828f4982df9e748 SHA-256: a163e96e6972372cffa8b6175c861f48b95d54b2975b04839cb1c66df259808a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/wb?keyword=microsoft%20flight%20sim%20x%20keyboard%20controls PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448110/normal_600dffaa076bd.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/zonebubapilutawopugodu.pdfIn PDF document text
    • http://wowogobofomufu.mygamesonline.org/possessive_pronouns_in_arabic.pdfIn PDF document text
    • http://pukebebizadolu.mypressonline.com/gezugutesi.pdfIn PDF document text
    • http://simopuvoramawu.mywebcommunity.org/86498383340.pdfIn PDF document text
    • http://bovozewoxif.22web.org/57956528668.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465398/normal_5fe98ea255bd5.pdfIn PDF document text
    • http://vizenam.medianewsonline.com/puzumariwumufujali.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494165/normal_5feb347d38cfc.pdfIn PDF document text
    • http://suzupuwejal.mygamesonline.org/ielts_listening_and_reading_band_score.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pabovabavuwemet.rf.gd/kevorenereje.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/67574528727.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/rarexos.pdfIn PDF document text
    • http://zuxokoberibaw.atwebpages.com/gamudopan.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/jepuvamidatilojolaje.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/write_an_equation_for_the_formation_of_fecl3s_from_its_elements_in_their_standard_states.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/dell_precision_tower_3620_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/acura_tsx_manual_swap.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_off0000d721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD721 5816 bytes
SHA-256: f6e97686e2ba29a61e462f048fdfa9aa605474f2465285691eb59c5b91f992bc
font_01_sfnt_off0000ead7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD7 11172 bytes
SHA-256: 0db8234cdf1db6d268e351b1de46f48f4e00e03d8cef63ec1e6e7e9641afd79d