Malicious PDF — malware analysis report

Static analysis result for SHA-256 e29c840a5d1e80a5…

MALICIOUS

PDF

76.4 KB Created: 2021-03-12 15:46:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49b3dfd133dca69ee78efba2fdc6dbbe SHA-1: ec3c14ac145209b7ddb019ce541e9ba369115ed5 SHA-256: e29c840a5d1e80a54081a160c8742104e4571e57b488d100d33b9ad9ce7634e7
224 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document exhibits multiple indicators of malicious intent, including a high ML classification score and ClamAV detection as a phishing trojan. The document employs a payment redirection lure, suggesting it aims to trick users into altering payment details or visiting malicious sites. The presence of numerous external links, including one pointing to `nipisod.ru`, indicates a likely attempt to lead users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 8

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://nipisod.ru/123?utm_term=paypal+here+app+apk
    • https://cdn.sqhk.co/zewuxumaro/jii8gg0/galaxy_mining_share_price_asx.pdf
    • https://cdn.sqhk.co/winelolibug/grbVVjj/defender_marine_warehouse_sale_2019.pdf
    • https://cdn.sqhk.co/tawibonikigo/ZjcXSPd/girapidin.pdf
    • https://cdn.sqhk.co/ferudati/jiiHAhf/jewisutupixonu.pdf
    • http://top-odejda.com/16287595644mhcec.pdf
    • http://study-english-02.space/skyrim_dark_brotherhood_night_mother_coffin_glitchvbpvh.pdf
    • https://cdn.sqhk.co/keropolor/kDjirlg/alien_blackout_gameplay_fr.pdf
    • https://cdn.sqhk.co/bimafaboxugu/g5ifnhe/james_hardie_scyon_cladding_installation_guide.pdf
    • http://qwertyujg.xyz/fumezugizorasazbyqbi.pdf
    • https://cdn.sqhk.co/vufebevefo/hagjvX8/likovekuzemokixizanekerub.pdf
    • http://vitrinachel.ru/does_samsung_tv_have_dolby_atmos9hmeg.pdf
    • http://lienforkid.com/home_design_3d_app_for_android_free_download7813p.pdf
    • http://biomaniks.website/kovirizozagoxjf0jo.pdf
    • http://shlifovka-pol.website/wivajewuselxhjp.pdf
    • http://youtube-subscribes.com/16899282054eggww.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://67dec473-0a9c-497c-80b1-62a4c84c5046.filesusr.com/ugd/0aab01_c3e74767834f4c6c8a5dfb8f2f4833b2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/61c7aedd-f099-4753-a8f3-9d9ac41585ae/46928102362.pdf
    • https://uploads.strikinglycdn.com/files/c5a80a42-9939-4311-8dd9-f49b73013157/jonadu.pdf
    • https://uploads.strikinglycdn.com/files/01ffa767-85f4-4c9f-a908-9bcc87575f95/kajaguxigebivomododew.pdf
    • https://uploads.strikinglycdn.com/files/d75fb2a7-a6bb-4d6e-854a-3851f720da36/how_much_does_a_transmission_repair_cost.pdf
    • https://e0ff2378-281a-4ea3-95ae-419c526fdc99.filesusr.com/ugd/0baf77_b0dbc213a2a741cf87320dfc0343afb8.pdf?index=true
    • https://5a1138df-423b-4a5d-a7c7-36223740754e.filesusr.com/ugd/a72fa8_f688de80219e499096680f71fdb4a46d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c5241189-f60a-4161-94ed-15adaa40a243/where_to_buy_humidifiers.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec78.bin
8f0107a2a62cf63f0486fc723991c749b8eb5b178fe805322636eb8622669a5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC78 4896 bytes
font_01_sfnt_off0000fd1d.bin
c97afcc795311ba5f81fc58e4c6227241983f822996c60e264239ced4db30914		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD1D 11564 bytes

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