PDF malware analysis — malicious · 6f87e9bcc212fb45

MALICIOUS

PDF

86.9 KB Created: 2021-07-02 13:00:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25

MD5: ab015b0a834e2e6dbf1d52b7095ad917 SHA-1: 9af6c15aa9c03dd2b4aac5f8f2ee1c446f7c360e SHA-256: 6f87e9bcc212fb45f49cb55da0e682b705367e07c34e52b18aa05da4e34c74dc

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, many pointing to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest this PDF is malicious, likely serving as a phishing lure or a distribution point for further malware. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

Nyx PDF Classifier malicious score 0.9835

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://coretry.ru/uplcv?utm_term=sock+it+to+me+cake+ingredients PDF link annotation
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607347ed1a834---36222756486.pdfIn PDF document text
- https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16076084c3bb51---77059832621.pdfIn PDF document text
- https://accuratesearch.com/userfiles/file/52007604884.pdfIn PDF document text
- https://myupfield.link/wp-content/plugins/super-forms/uploads/php/files/e20dmldt2vbh02tvh6du1cvj54/61233310272.pdfIn PDF document text
- http://yfatc.com/userfiles/file/80670599575.pdfIn PDF document text
- https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/69533a794e39efc395108f113cd48e24/37532000892.pdfIn PDF document text
- https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/pesr7i1qpm3ms8fu3gu4kdb3fr/7754765800.pdfIn PDF document text
- http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/6d196cb6a48bf44ef63de65e55a9130c/tajapaziruzavevaf.pdfIn PDF document text
- http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b0b8297b1a---32980288707.pdfIn PDF document text
- https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a8dedae84---71606705320.pdfIn PDF document text
- http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/160adc972cf610---poweso.pdfIn PDF document text
- http://lideparts.com/userfiles/file/1622270726.pdfIn PDF document text
- https://ph2020.org/ckfinder/userfiles/files/65451624888.pdfIn PDF document text
- https://yenhuy.vn/upload/files/17244766225.pdfIn PDF document text
- https://angelsstaff.com/uploads/file/lolisejelamerukasoga.pdfIn PDF document text
- https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/abump01scsm6hqrdmlq4nf7jls/76999627041.pdfIn PDF document text
- http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/6927b933c45c78692e798d604c10e50f/zawol.pdfIn PDF document text
- http://worthingtonpark101.com/userimages/kajijabofagiwanepoge.pdfIn PDF document text
- https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/4eca6d9efa8a71b0172974c426f40e55/benixexusad.pdfIn PDF document text
- http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/q7mcabb6k1glhouigg3sqk6920/bidupuj.pdfIn PDF document text
- http://hagelkonzept.de/userfiles/file/lefutigosolapamifufef.pdfIn PDF document text
- http://kolesnikov.pro/ckfinder/userfiles/files/famosidoludobunomepaje.pdfIn PDF document text
- http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16074f7a288a3a---tokavapokosu.pdfIn PDF document text
- http://portsreunion2021.com/clients/b/b1/b1889431de095b9710a1303a3c619afc/File/96038792749.pdfIn PDF document text
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3ed6d9646a---42117318941.pdfIn PDF document text
- http://boathousebrokerage.com/userfiles/file/44505511060.pdfIn PDF document text
- https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7f5f1a1c6---ronuru.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_off0000ee65.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE65	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0001067c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1067C	10836 bytes
SHA-256: `b4d63fb7119953a579079977eb4e0b0dbeae346018271eff24d598f5a4dc7024`
`font_02_sfnt_off00011f45.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F45	17472 bytes
SHA-256: `00154d68df1be432561e78c0d8457bead475b2e0af666f52d3c45b3e6f207adf`

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