PDF malware analysis — malicious · ceb9e177759367b6

MALICIOUS

PDF

85.2 KB Created: 2021-07-09 20:02:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29

MD5: 203faeb97f6d33f853d13fe801cf9178 SHA-1: 1d180500ce590397661c3ec242b0e09991f19eac SHA-256: ceb9e177759367b686d1b3dac4fd071764060599e25cd18cd8d44e485a53baef

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, with multiple heuristics indicating it is a link farm hosted on compromised WordPress sites and disposable domains. The embedded URLs likely lead to phishing or malware download sites. No scripts were extracted, but the PDF structure and numerous external links suggest an attempt to redirect the user to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

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://cructi.ru/uplcv?utm_term=determinants+of+demand+and+supply+pdf PDF link annotation
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160963bf500078---79149196156.pdfIn PDF document text
- http://usagimatur.com/files/others/13606243485.pdfIn PDF document text
- https://alatheir.com/atheirwsfiles/file/sosegubawasaxedelo.pdfIn PDF document text
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9c9b498df---6439682935.pdfIn PDF document text
- https://unitjaya.com/contents//files/mulubisorefewemekigo.pdfIn PDF document text
- http://flatadministration.com/uploades/fckeditorfile/71465132055.pdfIn PDF document text
- https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/8k60hvidv99mj8kipdm9nm5ure/vinojakaf.pdfIn PDF document text
- http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9922d35f8---87704124873.pdfIn PDF document text
- https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a8b75b1c350---47638690118.pdfIn PDF document text
- https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/jbg38fqv2vbotrueg00j6gks2n/mewasesunajitarajivan.pdfIn PDF document text
- http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afb0407d509---gisepetorekedonamipazitu.pdfIn PDF document text
- https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160927930cdf3a---68160603228.pdfIn PDF document text
- http://ciccioinpentola.com/userfiles/files/ritojuvekip.pdfIn PDF document text
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d9d99f37e6e---37716467119.pdfIn PDF document text
- https://alexandrapanayotou.com/web/images/static/file/73199395546.pdfIn PDF document text
- http://daiichilogistics.com/uploads/news_file/81386687337.pdfIn PDF document text
- http://booklandbooks.com/userfiles/file/47805020043.pdfIn PDF document text
- https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16084bb622a18a---bukosunogiz.pdfIn PDF document text
- https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/9du87c96af6d14ua2ansv8lman/81857444811.pdfIn PDF document text
- https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/8ncqktsm7dk5rsmt2dnrsdemrk/zakipebuxotenap.pdfIn PDF document text
- https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/eebc31e6b5aa1caadf934ade354b165e/josutitiluk.pdfIn PDF document text
- http://2440027.ru/upload/file/penogokaxasovafodobu.pdfIn PDF document text
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/a5d32d70c34d9a856cbd386f6fa3ea85/zivoledisolutikumi.pdfIn PDF document text
- https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/1608c38491ca39---78181287055.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_off0000eb54.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB54	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0001036b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1036B	10876 bytes
SHA-256: `bdf5f51d0a92875982a77937f158ca5f04b998b28cacaf269690687f973224fc`
`font_02_sfnt_off00011c83.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11C83	16436 bytes
SHA-256: `4e4a7d70f0f92284f58778538d84386c5bc1578bbb4f729dfb5d23f32716068b`

Open this report in the interactive analyzer, or submit your own file for analysis.