Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ac18c4750354ee…

MALICIOUS

PDF

84.3 KB Created: 2021-03-27 10:36:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e9c82a2502b7ec8b8845100522823d8 SHA-1: d1ddde63324c856696002fc4a61498ddbe583308 SHA-256: 68ac18c4750354eeb6d6f7f56f1311360b5801bba620c6d1a0e855647c4c3a0c
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm used for SEO manipulation or phishing. The primary malicious URL identified is https://botokaw.ru/wix?keyword=geekpro+user+manual+pdf, which likely serves as a lure or redirects to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/wix?keyword=geekpro+user+manual+pdf
    • http://buvofigutunam.22web.org/how_to_shorten_casio_g-shock_watch_band.pdf
    • https://mefifusefom.weebly.com/uploads/1/3/4/2/134266023/fumafo_felekexufe_vijuwo.pdf
    • https://xazovobarobek.weebly.com/uploads/1/3/4/4/134403102/7561907.pdf
    • http://majijeniwadimu.22web.org/zudususewufonirinunalof.pdf
    • https://nuwukovodikala.weebly.com/uploads/1/3/4/6/134666266/3832165.pdf
    • http://kufowawixapiva.sportsontheweb.net/45480107932.pdf
    • http://junumidutuzakox.getenjoyment.net/lamavakab.pdf
    • https://mivifasev.weebly.com/uploads/1/3/1/4/131483453/7997015.pdf
    • https://guxatizozekeme.weebly.com/uploads/1/3/4/7/134733227/nolane.pdf
    • http://xuxetosufuzo.getenjoyment.net/24_month_milestones_ontario.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://09d56968-2ae9-412d-ad86-e67dc63a1c23.filesusr.com/ugd/e8b91f_8ecc06991c3942dbae60d415d4bb11ca.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c2a1c336-3687-4021-be5a-0a6880499969/lenovo_thinkpad_t430_review_2018.pdf
    • http://minapisifiret.rf.gd/real_time_pcr_procedure.pdf
    • http://fexotupakel.rf.gd/ladavegugixe.pdf
    • http://wajoran.rf.gd/target_toddler_bed_sheet_sets.pdf
    • https://c2dbac7f-2075-4dc1-ad03-af0d0352bff2.filesusr.com/ugd/278743_820a995812be4ceb974e8f1443c24859.pdf?index=true
    • https://44bb6ee8-a0fe-4f72-890f-0f0a2fec05cf.filesusr.com/ugd/b65acf_25a238b5824d4bc78153f9915c8b2b99.pdf?index=true
    • https://uploads.strikinglycdn.com/files/30697887-0507-4c7a-b23b-cd1a21f7af78/mojejewejopoxodediwavisob.pdf
    • https://uploads.strikinglycdn.com/files/c6b7f215-ebd5-48de-9107-3c1a58abb625/vosoxapuduxifujalanabovel.pdf
    • https://a12a05ab-6462-4855-b086-b0a2a961d6d8.filesusr.com/ugd/2c76f4_a39e86b67502495c9f6d24c1dc3b8fad.pdf?index=true
    • https://b7e73dfe-ad35-4791-b4f7-7500f5b7882c.filesusr.com/ugd/bc79a4_61d6b11c8cfb4a19824f2fa3701994bc.pdf?index=true
    • https://uploads.strikinglycdn.com/files/6db15196-78fe-4a18-bfc4-6359ebc11e45/89620147936.pdf
    • https://uploads.strikinglycdn.com/files/f378c50f-6c51-4b9f-98d7-2c51effeb26d/wowaxugajoz.pdf
    • https://a9d1d3ec-13fa-4b7e-abe1-abe2c2ba1301.filesusr.com/ugd/f83029_7e699c209a134bf8b98d1d54006c2246.pdf?index=true
    • https://5c06e36d-e6a7-492f-989e-88f86e9ca1b1.filesusr.com/ugd/c9ae65_672941c92c684c289605342bfc20ccd1.pdf?index=true
    • 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_off00010b60.bin
970243d11f4d3044675381af0588aa3f26c50f0aeb1fe03efbe1db85f50244e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B60 5280 bytes
font_01_sfnt_off00011d44.bin
00d5157506057e6c843b4adc6d06a792a298961bea520bded5337abc0162eccf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D44 11144 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.