Malicious PDF — malware analysis report

Static analysis result for SHA-256 24b593a853bc2e30…

MALICIOUS

PDF

72.6 KB Created: 2021-03-10 00:58:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 17c5aeb5720f202315fa530fff9eef18 SHA-1: 1cf86d9dae72817f136f9d7dbe7f00afbe219d2b SHA-256: 24b593a853bc2e302334d11fca3384765a72097b49b2b2a9126e94263680c149
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The presence of a URL related to 'eternium how to get dungeon keys' combined with the link farm indicates a lure to direct users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • 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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://lozipotod.ru/wix?keyword=eternium+how+to+get+dungeon+keys PDF link annotation
    • https://cdn.sqhk.co/motuwezelu/yUidhhd/london_stock_exchange_free_float.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/gW7jjic/russian_car_driver_zil_130_hacked_version_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kerosumumato/ihchfgd/avenger_x_male_reader.pdfIn PDF document text
    • https://cdn.sqhk.co/tigadikem/jelyOty/skripsi_budaya_jawa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e50eee24-2d95-422d-8083-6f618d95927b.filesusr.com/ugd/594ae5_46b275b32e3d411f87247398f7dce957.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e16b1dd1-452a-4910-9b2e-745c281babed/mofizemusisotozibudovul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/425ffaa0-b8c9-4021-a62e-292d6dd830d5/amazing_grace_song_lyrics_hillsong.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00005610-d2f1-466a-96ae-0ffe1f45c73c/boy_scout_rank_advancement_tracking_spreadsheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9ddc2dd-6f64-439a-b932-3e96387231fb/samsung_crt_service_menu.pdfIn PDF document text
    • https://59bb578d-b312-442a-858b-1a1a54b18a6c.filesusr.com/ugd/c79b1c_9d01818e4e3249238afc7f5066e7fc4a.pdf?index=trueIn PDF document text
    • https://8ecf7690-1f99-4e28-a4b6-3228ba9731d7.filesusr.com/ugd/63d3ad_bca8b9735db547398de88dcd1cc7a8b5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd00de4e-3521-470e-95b2-c87b89e96d8a/how_to_open_kenmore_elite_washer_door.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9477d2a7-6df1-4643-abab-45965f1d14d0/kureramanadumegis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26868765-7c28-4f3f-945c-283c20277f71/books_related_to_midnight_sun.pdfIn PDF document text
    • https://4fe85328-8dbf-40e9-afa8-2c8d6ff8a9c8.filesusr.com/ugd/9c0842_9557636139024cbbb0513402b147482d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6d9ac55-0c16-433d-8f44-00f041fbc14b/popaxegopopofadibeli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d23817d-9323-4eaf-a025-0f0d8d50e625/final_fantasy_xv_ps4_trophies.pdfIn PDF document text
    • https://c9b0c9dc-51ad-46ec-84b2-dbc26df53712.filesusr.com/ugd/b6f588_01b5217433aa4a54832258e2b4a6ba16.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/063359ef-ecd2-4877-b9d1-61353d8e5060/aston_martin_dbx_for_sale_dubai.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c93924e-ca62-4b22-92d5-311da258094b/panasonic_telephone_number_us.pdfIn PDF document text
    • https://cb6d8354-940b-4e05-9f1d-0150973ab277.filesusr.com/ugd/882da0_b09a30e29ecb4c05b7c0dfc2e914a5b5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/643e5431-1619-4de0-b662-a94f8f3c07a9/paradigm_shift_bob_proctor_download.pdfIn PDF document text
    • https://d4180a97-8dd0-4bf1-9e2f-d1b128d1a64d.filesusr.com/ugd/ae059d_ab8da9b901b64576bc37f6f7907a3c31.pdf?index=trueIn PDF document text
    • https://03dfb0eb-7fe6-4188-ad87-ea2b88df7b19.filesusr.com/ugd/f967ac_8425429aa8eb4aa6891f8400ab2ad67d.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEA 5212 bytes
SHA-256: 0d70067d79deef6f5e3b85fb113d6a4f5658e57c627644e70beca8774b3b35d1
font_01_sfnt_off0000f19b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19B 10320 bytes
SHA-256: ae763cc7cd7084d9429e4ad41f95e7fd0b1d8c97a7a39ec76677315e08f17b53