Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a54726f0dad5835…

MALICIOUS

PDF

82.3 KB Created: 2021-03-17 15:03:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 91ba52b9d3935bb56d6c406ab2037516 SHA-1: 56169b9772049aa382a3a4a58ae943a74c25ccd7 SHA-256: 3a54726f0dad583572454f1a489930b7ca2e54fe9d279a7db841f61a6de594e6
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 0.9996

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://dugedepap.ru/wix?keyword=2020+scholarships+for+high+school+seniors PDF link annotation
    • https://cdn.sqhk.co/gorokipo/hjgiahc/runescape_spirit_weed.pdfIn PDF document text
    • https://cdn.sqhk.co/jubawiwa/JnUhjuw/youtube_activate_code_apple_tv.pdfIn PDF document text
    • https://cdn.sqhk.co/furugilenu/thj6gId/xolumodisujonotagon.pdfIn PDF document text
    • https://cdn.sqhk.co/gusijigi/ifR2ibY/flying_jatt_ka_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/botonerepap/brrFjgG/54613481129.pdfIn PDF document text
    • https://cdn.sqhk.co/lugizumevemu/fMhii6n/tomb_of_the_mask_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/madumubo/PifThig/vomelakimufotezanori.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/ljakgca/61918349380.pdfIn PDF document text
    • https://cdn.sqhk.co/mubasetopagu/hbogjBj/22630588095.pdfIn PDF document text
    • https://cdn.sqhk.co/bikugipozamu/cfidifj/97706903906.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/dhglhbY/webull_recurring_investment.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/1jjvJYM/gewetegojaxisanilazutebi.pdfIn PDF document text
    • https://cdn.sqhk.co/fowoleleda/6Mhichg/pico_rivera_walmart_eye_center.pdfIn PDF document text
    • https://cdn.sqhk.co/madufuxenuw/gfWUPhd/modern_warfare_warzone_update_notes.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/gewuwasi/foxtel_tv_guide_gold_coast.pdfIn PDF document text
    • https://d1897088-ef6e-4b60-8303-910b4b551fc1.filesusr.com/ugd/4cfbbd_413974729efd4932a3fd92b91d98605d.pdf?index=trueIn PDF document text
    • https://064d663d-f6b2-44cf-a6ad-083da5f315e5.filesusr.com/ugd/77eba6_21fc02c882834bb198ee357a3b45001c.pdf?index=trueIn PDF document text
    • https://86908e24-11f3-43a1-9346-bf531f45ee0b.filesusr.com/ugd/97493d_ef649b01c49f4af0ae743bcdc5904d00.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/bocio_nodular_difuso.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/14030880016.pdfIn PDF document text
    • https://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_7767a8073db948e6bf6d9822b0b325fb.pdf?index=trueIn PDF document text
    • https://8c805f22-5240-4a8e-9b4d-8499607ff1fc.filesusr.com/ugd/76156b_6fa74cb9db0e488784094fc6e74b06de.pdf?index=trueIn 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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105B2 5456 bytes
SHA-256: bded88e1c68e3f43d5aa3fa3635ffa853f8643d545401b814951514f95d1dd5f
font_01_sfnt_off0001183e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1183E 10396 bytes
SHA-256: 148aec6b5a84a4727d0e94eb98923b1e67a76db4e7bbca4cfbd52e74a4ef7a02

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