MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, with a critical heuristic identifying it as an SEO link farm and a high heuristic flagging it as an image lure linking to an SEO redirector. The primary URL identified is a redirector that masquerades as a guide for formatting an SD card, likely to entice users to click through to malicious content. ClamAV also detected this file as Pdf.Phishing.Trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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://xajibur.ru/123?utm_term=how+to+format+sd+card+write+protected PDF link annotation
- https://cdn-cms.f-static.net/uploads/4458635/normal_60438aaeda14c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4457330/normal_5ff55899c7725.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4392463/normal_60036dae22577.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4474211/normal_6007e257732c8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454290/normal_603952f537c9d.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://1dab3517-3db0-43ff-9fd6-b65b51f65b60.filesusr.com/ugd/565485_4c586a710a434698abb5a41e3d56bed8.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/b81da43e-9ba3-4547-afc6-3bd81513ffd9/53401415704.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/95b39913-835f-45ae-bfa1-2e656cb92b82/10611192604.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b89b5974-7134-4fb5-a975-9db080f7e84c/75477128653.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a6e41b64-513e-4f73-9f41-746e5b5e037f/68868477105.pdfIn PDF document text
- https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_c1ec68b1a1e945e7867b61c925de2ada.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/8f11daa4-1ad8-4d9b-b5f0-2ebfe3304e06/sinners_in_the_hands_of_an_angry_god_by_jonathan_edwards_worksheet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/772b51ac-5675-4f08-b75f-69111753ac69/how_to_be_a_certified_behavior_analyst.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5da16f0f-7c3a-42ed-8162-482a140f390a/77270513983.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/adb1e336-7154-42ec-8ccf-aba9f2d522fd/programmable_logic_controllers_5th_edition_petruzella_solutions_manual.pdfIn PDF document text
- https://3ae4d138-4ba3-4962-98fb-1b98b40a6a82.filesusr.com/ugd/38062a_01132136386b402ab4d33f6e742fe9e2.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/b8a674bb-c8fa-4b62-89c8-5197a52f045d/85490309355.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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010282.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10282 | 5320 bytes |
SHA-256: 00a3f72787b55da1aa45f5b8721d2c58552844a80dbb563f9826ff9298a6ec25 |
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font_01_sfnt_off00011493.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11493 | 11392 bytes |
SHA-256: 343f2f299bc143f9c3653adf5379ea3539932e9fe3f709cbff07f95541e712da |
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