Malicious PDF — malware analysis report

Static analysis result for SHA-256 6042fe307aab2942…

MALICIOUS

PDF

90.5 KB Created: 2021-07-17 06:13:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 309dc47fb718dafd8c419cd26321231c SHA-1: 322680d8cc91d94e2b50b3bbbff655cc5fed6b28 SHA-256: 6042fe307aab29425744ef708f506872d85836161bf42b093c21d468862766e1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external links, many of which point to compromised WordPress upload storage or disposable hosting, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://roughriders66.com/clients/f/fa/fa96273273f04fd2a06feef12b1e4d70/File/vunamogutomagidoxadiv.pdf
    • http://aarogyamedico.com/userfiles/file/jekojujoj.pdf
    • http://altaprecision.com/userfiles/file/77180505565.pdf
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160790aa06da70---pokux.pdf
    • http://24horasnoar.com.br/ckfinder/userfiles/files/rosujopuvaxire.pdf
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608214572a13d---pumososema.pdf
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075104791939---nijosakup.pdf
    • https://gulceoyunlar.com/calisma2/files/uploads/foferulizametuwudulo.pdf
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/5p96u0lu36a44iq8d6tvbtisa1/94001914686.pdf
    • https://edubox.mn/uploads/users/0/files/69484584539.pdf
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/fuu78n1qn2n9n474jnfco1e31r/wexuxi.pdf
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083eca3e16ed---vubefivejozifi.pdf
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/73dc9526778c13867d31edd980239c15/zesulunoxidumi.pdf
    • https://www.analfissur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072180cb7fa0---wagaduxezazopavutel.pdf
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607ddff187bdc---62589151296.pdf
    • https://cambodiadriverservice.com/userfiles/file/66130436389.pdf
    • http://daiichilogistics.com/uploads/news_file/rekofedugoruturev.pdf
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076c50a3ba7b---55904166327.pdf
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/14a03f7368146cd40c71234567b3a0b1/73885572114.pdf
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160829d2544c50---zukekonenakirexu.pdf
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160762022c4ee7---laripuwi.pdf
    • https://alkalacarservice.com/public_html/userfiles/file/59505476283.pdf
    • http://sonsuadogo.org/Images_upload/files/83829061443.pdf
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dde4de350f---zizejigizizuwofanemirore.pdf
    • http://architects-desk.com/uploadsfile/wemoruzevawitibepu.pdf
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/16087d58c58f2d---86438315806.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=things+women+invented
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe5e.bin
8e961a218f8d235ea7836348b92de68764cf1a229aa800bcef3f2f334d03a1b8
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE5E 17864 bytes
font_01_sfnt_off00012d02.bin
0bb6be2d8a65c604c4aeba8d52a7f80cf01f89f4e946862242fdcd7571b71290
pdf-font-stream PDF embedded font (sfnt) at offset 0x12D02 10500 bytes
font_02_sfnt_off0001448b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1448B 16792 bytes