MALICIOUS
242
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1204.002 Malicious Link
The PDF contains numerous links, many pointing to a redirector URL (https://ttraff.ru/pify?keyword=ldc+answer+key+2020+pdf+parishkar) which is flagged as malicious. The document body and heuristics suggest a lure for downloading content or accessing remote support, indicating a phishing or malware distribution attempt. The ML classifier strongly supports the malicious verdict.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 7
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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Remote-support tool lure high SE_REMOTE_SUPPORT_LUREDocument instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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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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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://ttraff.ru/pify?keyword=ldc+answer+key+2020+pdf+parishkar In PDF document text
- http://files.cigdemslankard.com/uploads/1/3/0/9/130969204/4530681.pdfIn PDF document text
- http://files.bottegabottega.com/uploads/1/3/1/4/131406592/7341762.pdfIn PDF document text
- http://files.uceplus.co.uk/uploads/1/3/2/7/132712326/9d83bb.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3748/1365/files/winob.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7203/5739/files/fundamentals_of_engineering_economics_3rd_edition_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2149/1621/files/oxford_english_for_cambridge_primary_workbook_6.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1538/9855/files/dumovopegitu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78549170372.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5712/6295/files/pesimemewi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1594/6918/files/99363884366.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4365/1735/files/dubapironitamiropaz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6051/7274/files/.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6477/1238/files/rasowunurewawipejif.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8774/9525/files/92302889043.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000061c3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x61C3 | 5684 bytes |
SHA-256: e4fdcccfa13dc54758942c3580298d5b1417b727e276943ef006185db42b27ff |
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font_01_sfnt_off0000753a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x753A | 10224 bytes |
SHA-256: e5a8fa79f4413264df84a7ba33a96ebbead052b110f0da92174b689878e65d8c |
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font_02_sfnt_off00009857.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9857 | 16204 bytes |
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15 |
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font_03_sfnt_off0000adc1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xADC1 | 8880 bytes |
SHA-256: 232e68d4b4f6483e0edb33d04e89a7b0e16221284d2463692cacc24fcfeab9ee |
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