Malicious PDF — malware analysis report

Static analysis result for SHA-256 27ce998850363941…

MALICIOUS

PDF

90.5 KB Created: 2021-03-17 08:11:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 69e6fedad01027244f73472f8c4ea644 SHA-1: df7e8facc120791a13917c865b5ff735a7a84a01 SHA-256: 27ce9988503639414eb467b2fb19b00529bf66c99544b4b82035452c5467979b
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains keywords related to database errors, likely used as a lure. No scripts were extracted, but the presence of many external links points towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/wix?keyword=ora-01102+cannot+mount+database+in+exclusive+mode+windows PDF link annotation
    • https://ruvezidarumova.weebly.com/uploads/1/3/1/3/131380493/nelugofuzisuri-wawobulosoreru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456686/normal_60295254f27fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405638/normal_5fda9573d0e21.pdfIn PDF document text
    • http://salet.store/savojifononevovejenanzcjxk.pdfIn PDF document text
    • http://jsexj.fun/crown_the_empire_the_fallout_deluxe_reissue_rar2fbhy.pdfIn PDF document text
    • https://sajosapisede.weebly.com/uploads/1/3/4/3/134344890/e22a41da95b.pdfIn PDF document text
    • https://vogexuluvudo.weebly.com/uploads/1/3/2/6/132695782/webuwi_ziwunenarubepo_peradu.pdfIn PDF document text
    • http://sivixezugi.iblogger.org/how_do_you_change_the_code_on_a_schlage_keypad_door_lock_without_programming_code.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454682/normal_60361785478d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480749/normal_5fe93d073edac.pdfIn PDF document text
    • https://zaduguwage.weebly.com/uploads/1/3/0/8/130874015/wezuxewaba.pdfIn PDF document text
    • http://mon-compte-cmb.best/how_to_summarize_a_texte6w01.pdfIn PDF document text
    • https://nunevebola.weebly.com/uploads/1/3/4/8/134846747/fuvoduwilula.pdfIn PDF document text
    • http://vesitifev.22web.org/kilowugi.pdfIn PDF document text
    • http://kudopifupelixi.22web.org/what_does_old_testament_say_about_divorce.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/vofadoloves/how_do_you_unblock_flash_player_on_chrome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbd1811b-d681-43c0-b26f-3e466d08ae91/luxpro_thermostat_manual_tx9000ts.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/admin_login_page_html_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05b498bc-8ab3-4dd3-b934-d439fe74463b/61731407100.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f21b6d5a-cd0b-4ee9-997f-6e734a695018/keurig_2.0_k200_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef12e8c9-f257-4d15-91fb-e3a7d5c882d8/musavixamawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b44351ad-fad3-4e3d-9f0c-95ef0b1f566d/how_to_turn_off_motion_smoothing_on_vizio_tv.pdfIn PDF document text
    • http://ginodoto.epizy.com/the_boy_in_the_striped_pajamas_quotes_sparknotes.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/vogewirerupuzinakumux.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_off00010abc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ABC 5828 bytes
SHA-256: 20126216fd99dc2929784d4b48aad69df049dc813f97b606bcda32b4c10db743
font_01_sfnt_off00011e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E8E 11672 bytes
SHA-256: 0bd8070cd84c181404278922e4bf6af1d4f0d4803d5247c1c50c6bd5d7e29090
font_02_sfnt_off000146b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146B8 16160 bytes
SHA-256: 71fec8a3adfe41455811528c654ef740a0d97889ddd19e39e153b04b7507b7f0