Malicious PDF — malware analysis report

Static analysis result for SHA-256 969c092d7857245d…

MALICIOUS

PDF

88.1 KB Created: 2021-07-15 21:55:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 513df0942d99fa232bd21d75215345bb SHA-1: e911b925185a0b431e0d7ba9124bccdd31d634e9 SHA-256: 969c092d7857245dedc0d2104280f5be4311e8fefa4b54929ce0568572f72d4e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a ML classifier and ClamAV, indicating it is likely a phishing or malware distribution lure. The document contains a link farm pointing to compromised WordPress sites and disposable hosting, designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit users via malicious links, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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://tyextractor.com/d/files/bexebaxefolojimelavar.pdf
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16088453200ced---fupitusadileguje.pdf
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/6613848db1476fae0ebedec60a58dff8/vapukixogajezujavizek.pdf
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/ca1bcbd44995f7c534609baa2e70a963/9934808692.pdf
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/l2utu9sioo7sd5ir0ilhgcs8s7/piroda.pdf
    • http://cartonwrappingmachine.com/userfiles/file/meviposijogatisomaveduxit.pdf
    • https://aarhuskortet.dk/images/file/kidegegumo.pdf
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/c555e75cc242d50a97c9a15bfba69b63/kavepulisex.pdf
    • http://scuderieverdina.it/scuderia/userfiles/file/8605425423.pdf
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/lu9h6cbqml93d8bhrhfle56i29/dufiwibalobog.pdf
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160926eb17336f---90961984549.pdf
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/25bef646c5cffc6a41c5ce1e04a8c6f2/nifamiro.pdf
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/2086fd4397183c571d294b6ee2f5f9bb/28965318447.pdf
    • http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b5ab51b14c2---26962408036.pdf
    • http://ctyrkolky-gamax.cz/data/dokumenty/retexaduwefapegoz.pdf
    • https://tailormade-sales-marketing.com/userfiles/file/48983253871.pdf
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c96cc142c60---24005856151.pdf
    • https://ltanimalpark.com/wp-content/plugins/super-forms/uploads/php/files/d083079a1e685ea9a3b7967727752312/33598935532.pdf
    • http://dmhu.eu/uploads/uplib/file/72762084219.pdf
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef33579615---88935255246.pdf
    • http://www.addvanceo.info/userfiles/files/52596900565.pdf
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/16092d9c419532---vomorilagu.pdf
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/c3c0f87bc71d32855508376089b6abea/woxevere.pdf
    • http://anhbanglaw.com/userfiles/file/javiba.pdf
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/d45a7de6e7fea2523d37d0d891077cc7/petapanamo.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=simulation+meaning+in+arabic
    • 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
stream_003_off0000f484.bin
aa676836ef654ec138cf58ca44935c60f9b6763a97095cf2830903cdb97b0426
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF484 25168 bytes
font_00_sfnt_off0000cb72.bin
18962addea2fb76ecba42b9080eccaad31ba48c83069f295e0bbe14d5f9eab69
pdf-font-stream PDF embedded font (sfnt) at offset 0xCB72 16056 bytes
font_02_sfnt_off000121e3.bin
3cb399cd834a341de23ee70a1bd8e24e365c70242d6deae8a2048275bd6c79ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x121E3 10720 bytes
font_03_sfnt_off00013a7d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13A7D 16792 bytes