Malicious PDF — malware analysis report

Static analysis result for SHA-256 d655d74f2ebc8eb2…

MALICIOUS

PDF

64.2 KB Created: 2021-03-01 13:25:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8a7b2bdd5b7bcfeff336cea32a560125 SHA-1: 99b83bb576bfe6a664aea1f13a51b7d5da451a9e SHA-256: d655d74f2ebc8eb2616deb7385f2cffd8adae4ca2d45357756287575125e65c0
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://pelibifir.ru/award?keyword=how+many+calories+in+cedar+plank+salmon PDF link annotation
    • http://goduvide.22web.org/metal_furring_ceiling_installation_guide.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/votuweroxigezog/tamil_new_movies_tamil_play.pdfIn PDF document text
    • http://kozogasivufi.myartsonline.com/58162505962.pdfIn PDF document text
    • http://pelasezota.rf.gd/45995238224.pdfIn PDF document text
    • http://jufakoxageponuz.rf.gd/17616806153.pdfIn PDF document text
    • http://dimafox.epizy.com/alaporan_tamilan_3d_audio_song.pdfIn PDF document text
    • http://zusatixolapurir.epizy.com/black_desert_online_ps4_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/latest_bollywood_movies_from_hdmoviespoint.pdfIn PDF document text
    • http://zesafemumibow.myartsonline.com/39932294800.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/14736985571.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/bhai_bolte_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/99231837059.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/what_are_the_major_purposes_of_social_research.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/lirut.pdfIn PDF document text
    • http://xorisok.epizy.com/69457192501.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_off0000bfb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFB8 5436 bytes
SHA-256: cc5793aab1670f13b0ea4a7af1eed6cff75ec53755af7632f66eee1e8d36c856
font_01_sfnt_off0000d231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD231 9892 bytes
SHA-256: 28ddcd6742cdf98eb279b5f52e20be68e04d85ba78151d82399243b80df7bcd2