Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e0a09a22a78a16b…

MALICIOUS

PDF

96.5 KB Created: 2021-05-14 16:25:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d1e8a4fcce943393e9e6ccc1f89e2044 SHA-1: 3c51251d4e481c187bdd0824f3bda0940a5c87db SHA-256: 1e0a09a22a78a16b8795b215d04113126988f529ccd0f95be56599f44e64a7f7
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable hosting, and one malicious URL (soxebez.ru) that is likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body is heavily obfuscated and appears to be a lure, possibly related to financial schemes given the title 'Simple wealth inevitable wealth summary'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://soxebez.ru/strik?utm_term=simple+wealth+inevitable+wealth+summary PDF link annotation
    • https://cdn.sqhk.co/xunalafugapa/cjbjbjJ/checklist_for_moving_into_a_new_property.pdfIn PDF document text
    • https://nidexopike.weebly.com/uploads/1/3/1/4/131407316/4156612.pdfIn PDF document text
    • https://cdn.sqhk.co/kawiwitifa/jyohiia/fuparagonepibisek.pdfIn PDF document text
    • https://gilaxaled.weebly.com/uploads/1/3/1/4/131438091/4778130.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/c3Shcgf/fajiremerakitexajoka.pdfIn PDF document text
    • https://nekatiru.weebly.com/uploads/1/3/2/6/132695473/879996.pdfIn PDF document text
    • https://netexebi.weebly.com/uploads/1/3/0/8/130815192/vinuv_bulemezod_gekonugik.pdfIn PDF document text
    • https://cdn.sqhk.co/zafupusapun/geAJij2/black_rifle_coffee_company_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/riwaxagi/ie6W8z8/slime_simulator_cool_math_games.pdfIn PDF document text
    • https://cdn.sqhk.co/takejirasomu/xCiaVij/gitamozaxirisogo.pdfIn PDF document text
    • https://cdn.sqhk.co/perokokamosa/YghCkMQ/67171748650.pdfIn PDF document text
    • https://cdn.sqhk.co/sukonazukuv/PDFhijf/53435010755.pdfIn PDF document text
    • https://cdn.sqhk.co/gegatuzikat/oB4q1fs/bitcoin_wallet_app_for_android.pdfIn PDF document text
    • https://zolowokixo.weebly.com/uploads/1/3/0/7/130738875/8854651.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e192e36c-395d-4660-9df6-aa7aed00c30a.filesusr.com/ugd/3aee12_86c0524aa406474d9d6550965f69f82c.pdf?index=trueIn PDF document text
    • https://6131fb9f-3080-406c-a6ab-c4686b6a2f6f.filesusr.com/ugd/52be6f_7b00f4769a8d4df98bf2a1ecf839a805.pdf?index=trueIn PDF document text
    • https://00407fa8-a9ef-4b78-9bbe-46147fc8acf6.filesusr.com/ugd/5ecadc_4fe430640d6448a280191c0c76b9fb9a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/nevurebujaromow.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/1615478392.pdfIn PDF document text
    • https://af1bea64-f5cd-41c2-a7c1-97f21c1aa057.filesusr.com/ugd/592671_2166c699b4d648d2820c4264f659884c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/94297152099.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/powerbeats_2_wireless_flashing_red_light.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/cnet_s_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce7a59bc-84dc-4ef5-9b8d-f8901f9eef3e/84935430570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad7fb9d9-4f3a-44b4-849f-7e2c047b3967/53070210052.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013b38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B38 5556 bytes
SHA-256: 44706d66e297ab1193d76c0cc8729933124e07978a99cb2e85bfacb743317612
font_01_sfnt_off00014e04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E04 11300 bytes
SHA-256: 18b68c369a593de5b7c3d5f21bf66fd0f8975b7666c84172f1f516d1ef5467aa