Malicious PDF — malware analysis report

Static analysis result for SHA-256 009a47e503d9b0b0…

MALICIOUS

PDF

80.1 KB Created: 2021-07-25 21:47:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7ef455e72cf13d6e37ca25167dccbfcd SHA-1: 038935ee9af8ac64b073b1a05a8fca22db8c245b SHA-256: 009a47e503d9b0b0844aba86d9907b049b07c94d5fb34bfce00d44026d8feaf5
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress upload directories and utilizing SEO link farm techniques to obscure their true destination. The primary goal appears to be directing users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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 https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070551ef1c87---nozokaworagotud.pdf
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/g2u5qsk68lpfr0p272p0mut6b6/75999262409.pdf
    • http://hollywoodterrace.org/clients/863344/File/35169763370.pdf
    • https://mimpiindah168.com/contents//files/sizoj.pdf
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/a129e60417abdf9263042cfabbeb2f30/4567860203.pdf
    • http://knshzj.com/CKEdit/upload/files/66580937893.pdf
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b0434484e6a---vovaterup.pdf
    • http://romanakladatelstvi.cz/userfiles/file/98847339873.pdf
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/c057971499083d6a80c88a996eb2bd2b/vumovadodixumi.pdf
    • https://uangraja.com/contents//files/taxum.pdf
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098a41aa6d0d---73422093783.pdf
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/8ba0979114c6dd11877949e1e4564e92/xiboxa.pdf
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/816c56ce75cfefa7d6a68ee38a634405/vipamogikoziv.pdf
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b74375137bb---bolanebanizazuxi.pdf
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609294a6a4799---gigukulizavipa.pdf
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16080c37d2b9a3---setosewasumez.pdf
    • https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/27466edf7d1c89d0108dc5dffc910c0d/6648513470.pdf
    • http://xn--ob0bjxt9h99icicrvkksa421cwwp7hiv4d6a.net/ckfinder/userfiles/files/loxulazavidujozakofus.pdf
    • http://skoleniridicubrno.cz/ckfinder/userfiles/files/nitunatokenu.pdf
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16080d9958d4b5---pinokevukametelamikiv.pdf
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a842fc75f2---81827231675.pdf
    • http://wsp.pl/userfiles/file/telinozefonife.pdf
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/7ba7290c158ecb526f8ffc00066a1c3c/84895964361.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=tere+bin+nahi+jeena+mar+jana+dholna+whatsapp+status
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0ce.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0CE 16792 bytes
font_01_sfnt_off0000d8e5.bin
57da7ae3b6fddb7683505b2a15d73334710e0a0d6db2cdfb2a660af8dd458c0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E5 11076 bytes
font_02_sfnt_off0000f242.bin
3ebd486235ab6c407a74d98ab9e1cf09d7661342c8c98090703f1c8ee3396579		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF242 16164 bytes
font_03_sfnt_off000107a9.bin
ff583e7e66b5fcb3bc6d7bd334b60c2b1ca0b69dfe8200a5d0143cc9a2ccf59c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107A9 16200 bytes

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