MALICIOUS
106
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains heuristics indicating it is a malformed exploit stream and a link farm, suggesting malicious intent. The 'SE_CALLBACK_LURE' heuristic specifically points to a callback phishing or tech-support scam pattern, where the document likely prompts the user to call a phone number. While no scripts were explicitly extracted, the ML classifier strongly flagged the PDF as malicious, and the presence of external URIs indicates potential redirection or payload delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9937
Heuristics 6
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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://abwvictory.com/uploads/files/90707995953.pdf In PDF document text
- http://full814.com/upload/files/40937496523.pdfIn PDF document text
- http://ckrestaurantgroup.com/ckfinder/userfiles/files/97173859427.pdfIn PDF document text
- https://ratodua.com/contents/files/jaseruvawovaduvu.pdfIn PDF document text
- http://optikametuje.cz/userfiles/file/namutavudamukura.pdfIn PDF document text
- http://rensind.com/upfolder/e/files/20210924075305.pdfIn PDF document text
- http://edv-denk.com/userfiles/file/kizorolasexodudagukin.pdfIn PDF document text
- https://jdsliquorlocker.com/nbloom/fckuploads/file/65849963820.pdfIn PDF document text
- https://hilanguage-com-tw.triangle-design.com/files/susulofu.pdfIn PDF document text
- https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/1616350eabe47d---somobesegodafosifozaliw.pdfIn PDF document text
- https://vidaleve.ind.br/ckfinder/userfiles/files/wabebevidajoxazep.pdfIn PDF document text
- http://leadershipcareer.kr/fckeditor/_upload/file/14048999629.pdfIn PDF document text
- http://universalestetic.com/userfiles/file/78897796528.pdfIn PDF document text
- http://jan-fotografie.nl/upload/files/fufolazujuxizawew.pdfIn PDF document text
- https://svarovanijelinek.cz/ckfinder/userfiles/files/wukiforinivonelon.pdfIn PDF document text
- http://wxeina.com/userfiles/files/14748938015.pdfIn PDF document text
- http://wksx.top/images/userfiles/file/zomefubuxoj.pdfIn PDF document text
- http://w-mill.jp/images/file/monedonixewilunuse.pdfIn PDF document text
- http://vasset.bg/userfiles/file/11132332342.pdfIn PDF document text
- http://banner-ever.com/ckImg/files/17827341256.pdfIn PDF document text
- http://sperrincaravans.com/images/file/85236956626.pdfIn PDF document text
- https://impulsa.mantareys.net/uploads/plantillas/files/98378937775.pdfIn PDF document text
- https://advance-pack.com/editor_upload/file/80119853047.pdfIn PDF document text
- https://mkycc4.com/kycc4.com/userfiles/files/41042616598.pdfIn PDF document text
- http://rockpapersun.com/upload_mce_image/file/bujak.pdfIn PDF document text
- http://feedproxy.google.com/~r/Xvkpad/~3/5bhJmFgkeCE/uplcv?utm_term=glossary+of+economic+terms+pdfPDF link annotation
- 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_off0000fd95.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD95 | 10936 bytes |
SHA-256: 8768d15fa4ca7ffbc3440a7e180473d9f09fcbc832f3b46560f2d33689997cdb |
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font_01_sfnt_off000116fa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116FA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012f0c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F0C | 17632 bytes |
SHA-256: 06024e4445cd8991a551b2d51d3fbd63f36ddd9391fe7cb35e95c7d9ac4d047d |
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