MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, including ClamAV's Pdf.Phishing.Trojan signature. It contains a large number of external links, many pointing to PDF files hosted on file-sharing services, suggesting a link farm or SEO poisoning tactic. One of the embedded URLs, 'https://jacksth.ru/award?keyword=cambridge+igcse+ict+2nd+edition+pdf+free+download', indicates a lure for educational content to entice downloads. While no scripts were explicitly extracted, the PDF structure and the nature of the heuristics suggest it may exploit PDF vulnerabilities or embed malicious JavaScript to facilitate further compromise.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
Heuristics 6
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://jacksth.ru/award?keyword=cambridge+igcse+ict+2nd+edition+pdf+free+download
- https://lanoxujuzon.weebly.com/uploads/1/3/4/6/134630121/pukebufidoweroj.pdf
- https://cdn-cms.f-static.net/uploads/4470524/normal_5fd24a8e0a98f.pdf
- https://cdn-cms.f-static.net/uploads/4407724/normal_600f1eaf869fa.pdf
- https://vonufire.weebly.com/uploads/1/3/4/5/134596457/rawedovejek.pdf
- https://static.s123-cdn-static.com/uploads/4404969/normal_5fca219198839.pdf
- http://vowujebotoza.mywebcommunity.org/89285517011.pdf
- https://zezebeburopixem.weebly.com/uploads/1/3/5/3/135326834/8164063.pdf
- https://vugilove.weebly.com/uploads/1/3/4/2/134234765/c173b5.pdf
- https://bukekumagisalej.weebly.com/uploads/1/3/5/3/135333054/nelunavimezebo.pdf
- https://cdn-cms.f-static.net/uploads/4423148/normal_605181a138a9e.pdf
- https://gebifafotuzuwi.weebly.com/uploads/1/3/5/3/135324040/filezupoterufi-fodetowavam.pdf
- https://cdn.sqhk.co/kubafipefo/igjgBhj/visual_studio_code_css_formatter.pdf
- https://wirimodarezekas.weebly.com/uploads/1/3/5/3/135314182/7ad76.pdf
- https://ritajixudigozik.weebly.com/uploads/1/3/5/3/135345652/84ae30a85ee.pdf
- http://xizugef.medianewsonline.com/simple_keto_dinner_recipes_for_one.pdf
- http://gejesixave.scienceontheweb.net/bazakodajesalojixiside.pdf
- https://cdn.sqhk.co/xevezele/OCrjeif/application_format_in_gujarati_for_job.pdf
- https://cdn.sqhk.co/nanijamu/jhjb9aS/dominos_near_me_delivery_menu.pdf
- https://jomozupofaku.weebly.com/uploads/1/3/4/3/134399246/354e0722b8fca.pdf
- https://wigufigavotafo.weebly.com/uploads/1/3/1/4/131452860/sijuvajotitesalim.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://uploads.strikinglycdn.com/files/9a42a741-e65e-46b6-b6d0-9aa605a72a20/navy_os_nec_list.pdf
- https://uploads.strikinglycdn.com/files/158ef871-ed0d-49f4-bdf1-bd335a14ac8c/14744731293.pdf
- 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://scripts.sil.org/OFL
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dcb1.bin1160418db78a074d3d95a862f3a6254348fb5d3ad9e6ff130e6cb03a21e38e43 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCB1 | 5648 bytes |
font_01_sfnt_off0000efe2.binb1c0de6f78f752656ec797445fbd939d87ecaed7b3ad20f177f82a4bbe9f58a5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFE2 | 10360 bytes |
font_02_sfnt_off00011377.bina542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11377 | 4324 bytes |
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