MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, directing users to multiple compromised WordPress sites. The presence of numerous links on disposable hosting and the use of UTM parameters suggest a phishing or scam attempt. No scripts were extracted, but the overall structure points to a social engineering attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/7e2bc23c8683e539be636437d7edeec9/medakulepu.pdf
- http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff507191c4---96872249772.pdf
- https://djennebeads.com/nbloom/fckuploads/file/fiburanebikajin.pdf
- http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160b115952e458---13681088439.pdf
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/8635ea7541fd995e94a26493fee3e4b2/53464817345.pdf
- https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/s3pt8gotc5a5k4b46km7f4j9kp/bovavesigurumijas.pdf
- http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160abb194e7ba0---76025545769.pdf
- http://cathayred-csr.com/img-cathay/files/4618218482.pdf
- http://linkingpeople.info/userfiles/file/vonotojis.pdf
- https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/817ab521d1569d8b8fdff70dbd45a394/xaxadexaluredamiw.pdf
- http://massageindex.nl/images/uploads/todoxokafuroma.pdf
- http://fullcolorspandoeken.nl/userfiles/file/47856163306.pdf
- https://netpage.info/userfiles/file/82508996414.pdf
- http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607ed0750afc6---62282183274.pdf
- https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6e8ca38f4---zegibaburopilorunaj.pdf
- http://atut-biuro.com/uploaded/file/782876969.pdf
- https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/ltl4ej6iaa0qst01bjveoh1jp9/bazemibefopipe.pdf
- http://menloathertonhigh1980.com/clients/6/6f/6f83464fe0b13873896cace574d4baa5/File/44556694048.pdf
- http://uro-medical.pl/zdjecia/fotki/file/rirekulepuxexibipi.pdf
- https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/266nc7dbi4q3ju2tpudjrq8ld0/39522072213.pdf
- http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160750124882a6---86622684329.pdf
- http://dgjst.com/upfile/file/linonagadarapokudesulet.pdf
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16072b79c5bbe4---25178406093.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=mixed+number+minus+whole+number
- 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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e664.binaa706ed2a198d7f694bcf19b38dcc4d44c8d4847f446b74026941a8051ae3fda |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE664 | 10672 bytes |
font_01_sfnt_off0000fea3.bincda2c5a49a0d993e6bc5e63c42a675753322c13600064aae97870c05836682b0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEA3 | 17724 bytes |
font_02_sfnt_off00012d7b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D7B | 16792 bytes |
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