MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious Link
The PDF file contains numerous embedded links, many of which point to compromised WordPress upload directories, suggesting a phishing or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as phishing and a trojan. The document body, though obfuscated, contains text related to 'Bstc paper 2019 ki answer key', likely a lure to encourage users to click the malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9989
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 http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073076fede5d---vanaxakokonuxud.pdf
- https://capitaleny.com/wp-content/plugins/super-forms/uploads/php/files/1354d0263326823572b2b5cb31911acb/78529414181.pdf
- http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/16088c19c3f459---valiluderavokizajemoneb.pdf
- https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/3fdd1400518b0d186055ef9145a29168/wagexukuwajomipimu.pdf
- http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cff61e910d---dewupupimuxeni.pdf
- https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160864832aa9fc---48379376587.pdf
- https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/975d140f111799f59ed74d8f9bfc3815/66887198758.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fde23a98e1---59761940047.pdf
- https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/0a75203163a86c0343735989edce1abb/19796612787.pdf
- https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/pv8lefgbrqk2p2e3lkobss5h0d/89686805294.pdf
- https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/9c1d491ef46a22198f0fc08d706bb2a3/81493403842.pdf
- https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/d3e4215f77c5417aa185ab752e74e8ab/tulidusifotika.pdf
- https://www.reflectionuk.com/wp-content/plugins/super-forms/uploads/php/files/uiqitn9dftnqp6a93hhvj1g424/kosubojaliza.pdf
- https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/4b8b606cd424b547c51198d3aced8a66/lotunuzitar.pdf
- https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf51a2e3f4---71596619728.pdf
- https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/djpnvoikd69va0nl501vpv01fe/14492205121.pdf
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/0fqegejpi6fdkaarjlmp974sd9/kimukak.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=bstc+paper+2019+ki+answer+key
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dc45.bin9bdafde38eafba8356b3b85d132f79a75e8b600fa5c879f003b346dbd98e6610 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC45 | 5684 bytes |
font_01_sfnt_off0000efc9.bin1702d88cfb3879c6fc6eadbd5f9f6fed12b5a45703db77df6e37aa9c178c8720 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFC9 | 10472 bytes |
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