Malicious PDF — malware analysis report

Static analysis result for SHA-256 96bdc0556ee43e14…

MALICIOUS

PDF

72.5 KB Created: 2021-02-27 00:20:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 98209367cf6da0eca109fa8b9ee15b42 SHA-1: ba9aebb5203f5732a04047853bbfe2d6a5a516b2 SHA-256: 96bdc0556ee43e14de4e367e8b6f1bf67cd3923552629de2ecb85bc6fc577a38
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/award?keyword=alone+together+tagalog+full+movie+free+download PDF link annotation
    • https://kulojimafad.weebly.com/uploads/1/3/4/5/134518235/voluwijoperu-posope-gokoxabadax-pawavesinorelav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418984/normal_6008b19162a55.pdfIn PDF document text
    • https://cdn.sqhk.co/vapumojemov/hjgcUge/6425479116.pdfIn PDF document text
    • http://bumawusuka.mypressonline.com/61361141973.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizilo/hihgWBa/bts_army_magic_piano_tiles_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/xXjdoXJ/picture_puzzle_game_download_uptodown.pdfIn PDF document text
    • https://bobilemako.weebly.com/uploads/1/3/4/7/134733435/3771011.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/ninasivol/zumidivudajo.pdfIn PDF document text
    • http://nununad.myartsonline.com/what_are_the_small_indentations_on_a_golf_ball_called.pdfIn PDF document text
    • http://pesetunal.onlinewebshop.net/12th_computer_application_book_in_tamil_medium_download.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/conformation_of_cyclohexane_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/junijar.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/josotema.pdfIn PDF document text
    • http://bifovigavij.myartsonline.com/6679810305.pdfIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/wojukimevevowosu.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_off0000e008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE008 5284 bytes
SHA-256: 7f451072f9eb00f476a4739418c8f2cb354884bf4b4229fb2abc607dbb28942a
font_01_sfnt_off0000f1ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1EC 10212 bytes
SHA-256: d7532f583a5f45a27144c064f20528086c2d0667cab05e504dcdcab9a222f920

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