Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ac414ead20ed799…

MALICIOUS

PDF

100.5 KB Created: 2021-03-24 03:43:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 12eb654e087d341b85ca92a6b424d8ad SHA-1: 58fd3bf26c8306c1c1c5a9b45dc81826ed650464 SHA-256: 1ac414ead20ed79987d81289004e7f2e52ed272578b4051d373bcac5aa5410c0
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 hosted on disposable domains, indicating a link farm or phishing operation. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for distributing further payloads or leading users to malicious sites. The embedded URLs and the PDF structure are consistent with phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

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/wix?keyword=bns+destroyer+guide PDF link annotation
    • http://sosuziba.mypressonline.com/wahl_cordless_trimmer_charger.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/jfdRjfi/kujasisipavojes.pdfIn PDF document text
    • http://swiss-gear-top.xyz/degivemajitowqn6ia.pdfIn PDF document text
    • https://cdn.sqhk.co/datagemop/agjhdH4/89675687953.pdfIn PDF document text
    • http://lnstagram-verifedbadge.com/blank_unit_circle_worksheet5ugg0.pdfIn PDF document text
    • https://jarajegixam.weebly.com/uploads/1/3/1/4/131437089/2831732.pdfIn PDF document text
    • http://zutatowatipo.mywebcommunity.org/jadurilitevopivoka.pdfIn PDF document text
    • http://vijofudevadotar.mywebcommunity.org/vofepijapavukoxa.pdfIn PDF document text
    • https://wuxorazaw.weebly.com/uploads/1/3/2/7/132712222/sorulofejepupelivu.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/does_magic_mouse_2_work_with_macbook_air.pdfIn PDF document text
    • http://zexorusawuwurew.sportsontheweb.net/zabedop.pdfIn PDF document text
    • http://promoocaoameericanas.com/nf_therapy_session_download06gdm.pdfIn PDF document text
    • https://cdn.sqhk.co/tizalenifo/kiehfFH/55553747743.pdfIn PDF document text
    • https://wijodemarivupi.weebly.com/uploads/1/3/4/8/134861972/tazeda-kelesazawe.pdfIn PDF document text
    • https://lokanasa.weebly.com/uploads/1/3/5/2/135299929/4646692.pdfIn PDF document text
    • https://votujejigep.weebly.com/uploads/1/3/1/3/131380583/suxafuwekuni.pdfIn PDF document text
    • http://naturwow.space/vogujekunejanodomia83z.pdfIn PDF document text
    • http://mkr-olimp.info/what_is_the_tax_exemption_for_2020gducl.pdfIn PDF document text
    • https://cdn.sqhk.co/mowibani/f7Ouzjh/old_land_phone_ringtone_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://c827806f-f9bf-4fd3-a4ce-e487c020fa79.filesusr.com/ugd/6fd45c_3e920168e0524c919fda73358cd0802c.pdf?index=trueIn PDF document text
    • http://pulutugorivexek.atwebpages.com/lean_six_sigma_libro.pdfIn PDF document text
    • https://bcd7deca-fd5d-492b-a220-d373ca515bc9.filesusr.com/ugd/12f4eb_a8c53d190d7843c087d4eaffc25fa7c5.pdf?index=trueIn PDF document text
    • http://nibemodida.myartsonline.com/3m_tape_catalogue.pdfIn PDF document text
    • http://nizofikunatafu.atwebpages.com/bose_321_series_iii.pdfIn PDF document text
    • https://6f4861c6-cdf0-4a5f-ba2d-f9c5e5bfbee6.filesusr.com/ugd/77941b_a2c649f2bf2a4fc595cf78e6d1034469.pdf?index=trueIn PDF document text
    • https://3d7c42e8-cad9-4196-8f3c-0f210fd97588.filesusr.com/ugd/1b7c00_424fb00ac161483fb30c727fdbfa0eb4.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CFC 4784 bytes
SHA-256: 91543a792c547f268daa813f15b708a3787341557f6e6aae43e036ed9b40e2d6
font_01_sfnt_off00014d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D57 12484 bytes
SHA-256: 4cdd235696a8c5f80faf44eaced3911197b78b60878c708d52a2ad67df3182c3
font_02_sfnt_off000176b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x176B9 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3