Malicious PDF — malware analysis report

Static analysis result for SHA-256 76178e96266ebe44…

MALICIOUS

PDF

72.5 KB Created: 2021-02-27 21:41:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6ee9c09cfd2dd51a1336ba1aaa2bb06d SHA-1: 4743b344fa573518c1c31b4141633d657262ed65 SHA-256: 76178e96266ebe44ea196052bcb84b89f880b836783371bd753a6847dabfe568
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://bologen.ru/award?keyword=computer+hardware+and+networking+jobs+in+meerut PDF link annotation
    • http://kufafukedexepix.mygamesonline.org/how_to_fix_a_john_deere_riding_lawn_mower.pdfIn PDF document text
    • https://cdn.sqhk.co/metajewamiva/mhhiFLB/planet_acheron_warhammer_40k.pdfIn PDF document text
    • http://mukisugogo.22web.org/graco_stanton_convertible_crib_screws.pdfIn PDF document text
    • https://cdn.sqhk.co/pekobenew/ljikghc/gajaloxipuraninedemumazof.pdfIn PDF document text
    • http://bixaxivajujojar.mypressonline.com/grohe_kitchen_faucet_leaking_at_handle.pdfIn PDF document text
    • https://talupujepanuzan.weebly.com/uploads/1/3/4/5/134595677/977719.pdfIn PDF document text
    • https://cdn.sqhk.co/nufomewo/iiOBzRC/3826213810.pdfIn PDF document text
    • https://cdn.sqhk.co/depifozopupe/WXWcnK3/revuwaworixud.pdfIn PDF document text
    • https://bolopuboj.weebly.com/uploads/1/3/5/2/135295375/28b3213b.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/jiguwuzobozobaz/17099505252.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/bissell_little_green_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/97670900293.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/jaxixorekujepexizaga.pdfIn PDF document text
    • http://sekudevabadim.rf.gd/27532400311.pdfIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/88920511136.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/1303871116.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/senorita_song_ringtone_zedge.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000caa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA0 5616 bytes
SHA-256: 52a2a19e1be9888998b4891d5b2f6aeb8b3afc0ab9b56e029360aea921b912b9
font_01_sfnt_off0000dd99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD99 9792 bytes
SHA-256: 801d280fca120957fa1873850d81b744a628c4bcb0c806f4467265430db82b3f
font_02_sfnt_off0000ff4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4E 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3

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