Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aeee6a48f892d69…

MALICIOUS

PDF

95.0 KB Created: 2021-06-27 08:59:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f56cb824dd7c8e9748c9b9b58e57c67e SHA-1: b49f41b3b1f59dda88ff330d25151b258688dc56 SHA-256: 1aeee6a48f892d69e84bbb385410ee7a069477ac1b5aabe7ac14271dba567160
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, embedding numerous URLs that point to compromised WordPress sites and other potentially malicious content. The primary purpose appears to be directing users to external, untrusted resources, consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9918

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://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/u7gjrffeco9e9mvuqib93ktg3s/rutuwadalusida.pdf
    • http://campbellelectronics.com/uploads/81700080423.pdf
    • http://keacg.com/upload/files/religojivob.pdf
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c5acc77e086---zopijuvaritoriwu.pdf
    • https://communeouchamps.fr/userfiles/file/98623265346.pdf
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/bef9489b1b2338789ae6b0d813b8bacb/womiloluzolizezepupag.pdf
    • http://cbgnfinance.com/userfiles/file/60105271082.pdf
    • https://samavetpharm.com/userfiles/files/98679831316.pdf
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c92367d1347---mikevojuz.pdf
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/661c9crio98qvo13lobvmfqtfo/pisikiriwalufal.pdf
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b43001cdeba---60863664806.pdf
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e584b8fd95---54023744870.pdf
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/efd284a5f068e79cf0ac9abe50ffe961/vimudufimesolipevev.pdf
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607ee1611db5f---17586892103.pdf
    • https://vrindaindia.com/php/joseph/uploads/file/45865469758.pdf
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/c20760bf5eb4b46ba64aa66edac4b502/zojobatizuvoreliwuwok.pdf
    • http://vasvaripalmuzeum.hu/upload/file/99961958569.pdf
    • https://fotoprint.lv/downloads/file/jufajulojevavatorijomow.pdf
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc5cd3b28e---babivuzeririk.pdf
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16077ac8dbdedb---fowomojagojib.pdf
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7edbed4ea---gudisedafurilu.pdf
    • http://amphorabeautyclub.com/campannas/file/xaxififanalevuzerulaj.pdf
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/c025d583006a949f81466888d41fb5dc/lopalakorarifitufujita.pdf
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608ad4321bc78---mofaluvifubejagobe.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=grilling+wagyu+beef+burgers
    • 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_off0000f70b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF70B 16792 bytes
font_01_sfnt_off00010f1c.bin
737ab74049f771be5e2d81578a571af5c8c30a5ce10820c985a425d32213f380		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F1C 16372 bytes
font_02_sfnt_off0001258a.bin
7972dcdd27f9fd987d778b1c080188a4829594f34cd57343f33791a33bc1133d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1258A 10652 bytes
font_03_sfnt_off00013e18.bin
52cae32d5642ac1bd5a04877a5fb3f27e0202c7fb6f0e7c77787bb777f7a8127		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E18 18196 bytes

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