PDF malware analysis — malicious · 3270ab7dea32eee0

MALICIOUS

PDF

82.2 KB Created: 2021-09-01 03:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24

MD5: 736411f1a339cca009a29d8266c9c471 SHA-1: aea8ffa056f1879229ad6b0902c02a412735fe89 SHA-256: 3270ab7dea32eee0ec64b3788e68f8988363647bb2fc9ed825fc83d49b57b60f

196 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains numerous embedded URLs, many of which point to compromised websites or disposable hosting. The 'SE_PAYMENT_REDIRECT_LURE' heuristic indicates the document's content is designed to trick users into believing there are changes to payment or banking instructions. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE

Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
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://pistant.ru/uplcv?utm_term=qualities+of+accounting+information+pdf PDF link annotation
- http://edwindijk.nl/home/edijk/domains/edwindijk.nl/public_html/uploads/file/93864675472.pdfIn PDF document text
- https://ags-car.com/upload/files/palurojusemezinekakixo.pdfIn PDF document text
- https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac37e8219fb---39275352418.pdfIn PDF document text
- https://chungcungoaigiao.net/uploads/files/68303608024.pdfIn PDF document text
- http://www.tobywells.org/media/fckdir/file/81920473955.pdfIn PDF document text
- https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/up8uor86pshki133q09mdd45rc/61333064046.pdfIn PDF document text
- https://parklanehotel.asia/userfiles/file/6227739408.pdfIn PDF document text
- https://akproauto.net/nbloom/fckuploads/file/patidufatiputawamenuved.pdfIn PDF document text
- http://aroma-es.red/yamituki-n/uploads/files/77547754095.pdfIn PDF document text
- http://qca.ch/userfiles/file/70482005376.pdfIn PDF document text
- http://smartwealthhk.com/userfiles/59056842698.pdfIn PDF document text
- https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/mhh4h7h6m88pr1epq9peinio47/70250741832.pdfIn PDF document text
- https://bor-diing.com/upload/files/72899156493.pdfIn PDF document text
- http://orzo.cz/uploaded/files/sevatak.pdfIn PDF document text
- http://suliaox.com/v15/Upload/file/2021723544493207.pdfIn PDF document text
- http://classicalgardenstatues.com/uplds/file/25494247215.pdfIn PDF document text
- https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/21106f5db37182655d3c09a94ac449fd/89055757918.pdfIn PDF document text
- https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/c7r24fftpt52vooccidaj15kq0/7821720362.pdfIn PDF document text
- https://giolog.biz/images/bulk_images/files/misog.pdfIn PDF document text
- https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/a1eckfmsbf7kpopf6gcckjeslt/memeguwitazed.pdfIn PDF document text
- http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160dce414734ad---2956997224.pdfIn PDF document text
- http://contelex.it/userfiles/files/rofasepibijolo.pdfIn 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://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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000dadf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDADF	17588 bytes
SHA-256: `c639b92815e3163ae7ab32ca1a0038caaa073211e4dfeda957832e5f594db6ac`
`font_01_sfnt_off00010846.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10846	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0001205d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1205D	11120 bytes
SHA-256: `6f7783c31db59006cac0a2910528b884a02d9a01bcaf20c11bc359c72c743682`

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