Malicious PDF — malware analysis report

Static analysis result for SHA-256 b92ce566eb232880…

MALICIOUS

PDF

76.3 KB Created: 2021-01-18 00:12:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a2df8f4a3c6e66c2c50175a018a889bd SHA-1: 4b08da99e0d6882c6bad6127288dc971980f9a51 SHA-256: b92ce566eb232880ac58a174c5efdf4e00404cf819cd1be5fa3b3ba3c5119155
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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.
  • 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://trafffi.ru/123?utm_term=maria+montessori+the+absorbent+mind+pdf PDF link annotation
    • https://cdn.sqhk.co/tumowara/jgxKxjc/apple_mp3_player_how_to_download_music.pdfIn PDF document text
    • https://vupimolafi.weebly.com/uploads/1/3/1/3/131398504/7716790.pdfIn PDF document text
    • https://site-1215037.mozfiles.com/files/1215037/cargo_theme_wordpress_free.pdfIn PDF document text
    • https://cdn.sqhk.co/zewesifadeka/jbigicS/world_bitcoin_mining_bot_telegram_legit.pdfIn PDF document text
    • https://cdn.sqhk.co/xogedusov/iew49jj/webakeseverubonixalezo.pdfIn PDF document text
    • https://cdn.sqhk.co/kosifodalab/RgcPnjm/32219630928.pdfIn PDF document text
    • https://cdn.sqhk.co/xijogedobu/ejj4iir/facebook_marketplace_scams_address.pdfIn PDF document text
    • https://cdn.sqhk.co/lufelumad/hjcjdgo/ecology_jobs_salary.pdfIn PDF document text
    • https://pinozawekik.weebly.com/uploads/1/3/4/5/134589254/sesuwalowubata.pdfIn PDF document text
    • https://site-1084247.mozfiles.com/files/1084247/vemawubatevobewigowene.pdfIn PDF document text
    • https://cdn.sqhk.co/jadepibake/vfFaigU/cthulhu_dnd_god.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/ehajd69/movirodagiledaluku.pdfIn PDF document text
    • https://cdn.sqhk.co/sizozizaj/Xoz7Gig/heron_circle_carlsbad_ca.pdfIn PDF document text
    • https://cdn.sqhk.co/zurosewe/micqRyh/download_game_summoners_war_sky_arena_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/waxipefimafa/dYYifja/doxekofapidajekalexu.pdfIn PDF document text
    • https://cdn.sqhk.co/xumirikebixo/ggVgc4j/this_war_of_mine_switch_review_ign.pdfIn PDF document text
    • https://xiravitufe.weebly.com/uploads/1/3/4/4/134438949/8082597.pdfIn PDF document text
    • https://cdn.sqhk.co/jufebarur/fjdFGuD/wuzejoguzik.pdfIn PDF document text
    • https://ragusixiseditof.weebly.com/uploads/1/3/0/8/130814169/fogezimag_nutakopeno_pajefomev_sakalarotetosi.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikebepo/ji4jaki/giwupaxevunopofipod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ec7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7E 5392 bytes
SHA-256: 9a38d6d17d2bdcb49972a47fee6c8f29be1788e717461fed68cd27bbb6544906
font_01_sfnt_off0000feac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEAC 10840 bytes
SHA-256: 47d3d86ffb9a0e7a34835682706a024936c7ac0e06cad1b2309afd70277ce063

Open this report in the interactive analyzer, or submit your own file for analysis.