PDF malware analysis — malicious · 009d9ac405703c2b

MALICIOUS

PDF

85.3 KB Created: 2021-09-12 12:18:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: f7122b541c29efd6d054d6f9faa50035 SHA-1: 979a03166b429a6bb540ec1bce2619371dd189fd SHA-256: 009d9ac405703c2b3d70f51a988d5a050865cfd1e5a8a7b9973e9c6ecb192401

196 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised WordPress uploads and disposable hosting, suggesting a link farm designed to redirect users. The 'SE_PAYMENT_REDIRECT_LURE' heuristic indicates the document content likely attempts to trick users into believing there are new or changed payment instructions. While no scripts were explicitly extracted, the presence of external URIs and the ML classifier's high confidence score point towards a malicious phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9860

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://allytemp.ru/uplcv?utm_term=how+to+transfer+contacts+from+android+to+iphone PDF link annotation
- https://termoformat.md/img/files/kigibon.pdfIn PDF document text
- http://duef.ru/public/file/96852358433.pdfIn PDF document text
- http://ct-tci.com/cttax/userfiles/files/witewusafimawojirasibafit.pdfIn PDF document text
- https://foodexgida.com/uploads/files/20248067816.pdfIn PDF document text
- http://szhlfz.net/upload/25976790643.pdfIn PDF document text
- https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613198897c791---4310544869.pdfIn PDF document text
- http://geofer.eu/userfiles/files/3526059514.pdfIn PDF document text
- https://aldaserwis.pl/ckfinder/userfiles/files/kelilesedazubifirulanidev.pdfIn PDF document text
- https://luxurybaths.marblobaths.ph/app/webroot/img/files/5747081306.pdfIn PDF document text
- http://badischer-kunstverein.de/ckfinder/userfiles/files/29414837897.pdfIn PDF document text
- http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/523cbfd0e2dcb01e9eade9d903c5e631/8725141765.pdfIn PDF document text
- http://bugaboo-buffalo.eu/UserFiles/File/ridifanofarafituvigobadu.pdfIn PDF document text
- https://linhngapt.vn/upload/files/vogiru.pdfIn PDF document text
- http://pr-jam.com/ckfinder/userfiles/files/pisavokuletulos.pdfIn PDF document text
- http://barcelonasixtytwo.com/userfiles/file/serugekimuvuwa.pdfIn PDF document text
- https://pelletier-tp.fr/ckfinder/userfiles/files/65562754979.pdfIn PDF document text
- http://narnivet.com/userfiles/files/lusogaw.pdfIn PDF document text
- https://am-system.eu/ckfinder/userfiles/files/lolokaxirorofufaxogurefi.pdfIn PDF document text
- https://dpt-mh.com/uploads/news/files/59179700546.pdfIn PDF document text
- https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613a06828dced---13511669585.pdfIn PDF document text
- https://bushregenerators.info/userfiles/files/72648827593.pdfIn PDF document text
- http://rungruangsteel.com/public/upload/userfiles/files/xexamikexikusivutaxiroreb.pdfIn PDF document text
- https://greenvalleykerala.com/ckfinder/userfiles/files/50284078996.pdfIn PDF document text
- https://minjar.mebel18.com/uploads/files/roxivapedajidamafodarizo.pdfIn PDF document text
- http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133aa9ca0b2f---zuwofifugirasepisotup.pdfIn PDF document text
- https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/88ce86bec341a08150bfa4d6711829d1/jovukotujalovajawi.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_off0000e7f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE7F8	18040 bytes
SHA-256: `438033d46b634098b9c77d35463df5d3e37c689c5a60c1e6811517f73efb09b4`
`font_01_sfnt_off0001163c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1163C	10916 bytes
SHA-256: `375fcd1656a7e077188ad3f69b253632a8140f992417f91619457da0c840e009`
`font_02_sfnt_off00012f5b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12F5B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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