Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe114615196544fa…

MALICIOUS

PDF

72.0 KB Created: 2021-03-21 09:02:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 0eac98eba5cbd928842907b055b344c6 SHA-1: 7e71d3511fd239416133793612732f8cf8d56553 SHA-256: fe114615196544fa27cee750fcf21adcb2a9d56fecfb36b38fdcd1437f00fb38
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, indicating a link farm or redirection scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The embedded URLs and the heuristic findings point towards an attempt to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://fokemale.ru/wix?keyword=chefman+waffle+maker+manual PDF link annotation
    • http://remontlegko.info/takagapodowesukowikewumepv2kod.pdfIn PDF document text
    • http://job-finder.space/28764347622ou7rh.pdfIn PDF document text
    • http://hookup681.site/436579975853zopk.pdfIn PDF document text
    • http://dwatches.site/dimafozosomofubexivitewgcyru.pdfIn PDF document text
    • http://stylecurtains.com/9848817976tmci6.pdfIn PDF document text
    • http://startbastar.online/12607187571t597.pdfIn PDF document text
    • http://quickpapp.online/why_should_you_read_crime_and_punishmentisb52.pdfIn PDF document text
    • http://arendaavto.taxi/kabojavedurudefost2yoo.pdfIn PDF document text
    • http://jowakemanek.iblogger.org/what_year_malibu_is_being_recalled.pdfIn PDF document text
    • http://limecash.xyz/pifewomurezovivefisux8wjdv.pdfIn PDF document text
    • http://best-ital.fun/chattanooga_hydrocollator_e2_parts4uwtz.pdfIn PDF document text
    • http://sedobepotorosi.22web.org/concerning_hobbits_tin_whistle_sheet_music.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://83bd47e3-138d-48d8-8d00-514fe13b91b0.filesusr.com/ugd/c87a2f_fcd5950a275345c2a5a7e98956455c7c.pdf?index=trueIn PDF document text
    • https://460eb545-5389-4aa9-9e78-d1074a8bca0c.filesusr.com/ugd/21a131_54de3d48c93a4c5a9f9059d55cedd86f.pdf?index=trueIn PDF document text
    • https://2ddedb0e-b7b0-41c9-a8bc-c018bd0e6e4c.filesusr.com/ugd/70094d_f4666b6a6b134152979b1826d9d5bf9f.pdf?index=trueIn PDF document text
    • http://tovegebipodu.rf.gd/fiery_furnace_tour_guide.pdfIn PDF document text
    • https://b724dda4-e2e0-47c5-811c-ae3b7273578b.filesusr.com/ugd/a1e5ee_161c077124b04fe8ad821c7925805c97.pdf?index=trueIn PDF document text
    • https://d05b2b94-0af3-401c-a6ef-75d00d0b58ae.filesusr.com/ugd/3bca44_1f30f6b8f66e41559a24da9a77fc98fc.pdf?index=trueIn PDF document text
    • https://945c5b1a-9feb-4a08-b72d-c905ca1b1520.filesusr.com/ugd/27135d_98cfc03256e2421880708a6ae6454679.pdf?index=trueIn PDF document text
    • https://b634734f-67aa-4edc-9b69-dcf7610e4690.filesusr.com/ugd/c86859_fc6c2a836b7945c1b28fdf5daa90aa1b.pdf?index=trueIn PDF document text
    • https://40ba1f7a-6e91-49bb-bbb8-dfbb40a2bc60.filesusr.com/ugd/22bf55_6e4b4b15bac0409a91940ce3aa92b092.pdf?index=trueIn PDF document text
    • https://b2f02272-107b-4032-aafc-54cdd6265a16.filesusr.com/ugd/6cf392_e55b0f45fb744d65b677a1da2e554f35.pdf?index=trueIn PDF document text
    • https://2a4c341d-9af7-4f89-b48a-1b926ad6ced7.filesusr.com/ugd/dd6616_e3c6bed2f899402aa13bc3f90c12242a.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC935 4888 bytes
SHA-256: 7f06e6379b8161bbcc155997687f9135b69135e0ddb33765034ec178b7b3e880
font_01_sfnt_off0000d9b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B6 10268 bytes
SHA-256: c2cb2f2dd37cd227a214cfe0d01c6229626ab7f5a7e8a7818177176f7462d35d
font_02_sfnt_off0000fd2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2C 16196 bytes
SHA-256: 16841cd06245dfab0499788473f9c5e49459ecbf5940b4b59b8708d0fa28d68c

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