Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ac0b6a6ba378028…

MALICIOUS

PDF

97.4 KB Created: 2021-03-12 13:47:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 9b49f56bcb690af66d18869b79281c5c SHA-1: bd8117bd592af2c2b80cd7a24608aee4f2492fb8 SHA-256: 3ac0b6a6ba3780288ade34b657ea962b0a9f7a8f99968d06b870c61e90f2502e
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO manipulation or phishing campaigns. The heuristic 'PDF_SEO_LINK_FARM' and the presence of a URL with 'utm_term' strongly suggest this malicious intent. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. No scripts were extracted, but the document's structure and embedded links point to a malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • 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.
  • 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://maypoin.ru/strik?utm_term=the+mane+choice+review PDF link annotation
    • https://lotopunukulel.weebly.com/uploads/1/3/4/4/134473418/8a5fd6a30392b4.pdfIn PDF document text
    • https://vuminuzatadabem.weebly.com/uploads/1/3/4/3/134311796/37491b9060.pdfIn PDF document text
    • http://givepamodugag.22web.org/69174542156.pdfIn PDF document text
    • https://tatunonomufobuf.weebly.com/uploads/1/3/4/3/134355176/7415302.pdfIn PDF document text
    • https://mipixapotorifa.weebly.com/uploads/1/3/0/9/130969355/lafusivinisule.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://uploads.strikinglycdn.com/files/4452914b-0cb9-4642-a1e3-084698ef166a/wupepufusedikupib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e106ace6-677c-4031-8a12-a86fccc8a62d/jaguxerikodilamavixum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48bd0bfc-57ef-432d-938f-81332f49d22a/how_to_turn_off_microsoft_visual_basic_for_applications.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/84255773366.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/4487895810.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2a1dab2-5b3c-4684-a2fd-3c585445d114/whirlpool_gold_dishwasher_heating_element_not_working.pdfIn PDF document text
    • https://c183b790-cb34-49aa-848e-1a9f2b14dda3.filesusr.com/ugd/d8966e_dbf01b790fc5422faeb236233c16adad.pdf?index=trueIn PDF document text
    • http://sikejilewiz.epizy.com/calendario_mundial_rusia_2018_para_descargar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53b3c326-8d24-48b1-a042-7a21974e9508/guess_how_much_i_love_you_quilted_fabric_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/download_audacity_for_windows_xp_sp2.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/97178330313.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/how_to_become_a_license_customs_broker.pdfIn PDF document text
    • https://94ac7338-8c66-48ed-b7e4-01cccba3eff0.filesusr.com/ugd/9b8421_3fbcbff5ac2447d2ad31259ada7d6ff0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f4b4bd5-5cb0-40b4-9eb9-597e09973259/38379664035.pdfIn PDF document text
    • https://73e25548-3913-4bbb-aa69-a1b25f69568d.filesusr.com/ugd/cece23_37872e472f474b449d49ecc670c49ea3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9ddc300-fea5-4a56-b4ca-a43377a3b631/bezetidupugenoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c71bdeac-ce36-4443-8ab5-52d1aab3791a/48542986887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3450a305-400d-4492-ab5b-d46697ea260a/67582734804.pdfIn PDF document text
    • https://a581e706-3bf6-41fb-8978-ad4d4077590d.filesusr.com/ugd/afbe6b_ee3c1d11528249f98dee6e1c338a3043.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7901c67-7c32-4585-b8e2-b1fb185f06d7/24335393266.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001112e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1112E 4640 bytes
SHA-256: 634adf2abdfe48a1746df17d547ac0bd90b2c55b185091cec09064b0b9b9f37d
font_01_sfnt_off000120b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120B6 4124 bytes
SHA-256: 350aab16a1e8ad1b81638783c9363d0c00d4ff7ddad5e9c110219645bf1124b5
font_02_sfnt_off00012c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C27 11320 bytes
SHA-256: 03dd3515559bff37a7a409bbaf2ba0d8ff41ce23b89d491eadfc3549df9e97d6
font_03_sfnt_off000152f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152F5 16060 bytes
SHA-256: 5b45d8957cdd618c0f157c507058aef1810e6158bb3d1abf257796d6008f54d1
font_04_sfnt_off0001678a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1678A 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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