MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, with one pointing to a known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document body appears to be corrupted or obfuscated, but the presence of the URL 'https://ttraff.cc/pify?keyword=catalysis+mcq+pdf' suggests a lure related to academic content, likely to redirect users to malicious sites or download further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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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.cc/pify?keyword=catalysis+mcq+pdf In PDF document text
- http://files.alikellyphotography.com/uploads/1/3/1/1/131164488/5d1766497a.pdfIn PDF document text
- http://files.esubtraininghub.com/uploads/1/3/0/7/130738740/e8d4fefaabd.pdfIn PDF document text
- http://files.barrvillemc.org/uploads/1/3/0/7/130776118/423244.pdfIn PDF document text
- http://files.victordelestre.com/uploads/1/3/2/7/132740814/xixunosiburul-zarumibupa-wumubolemudama-bapovibegigo.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0428/1624/1831/files/21583018511.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0636/0730/files/psc_biology_questions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/1283/8808/files/26842507766.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4162/7029/files/john_b_watson_behaviorism_theory.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0391/1076/files/axis_bank_current_account_debit_card_application_form.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3554/1151/files/goldstein_classical_mechanics.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7723/7917/files/35010185858.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6470/4662/files/lamopuxerageluxa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38138836364.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1172/6750/files/laxisezi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5136/9127/files/5888077842.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9341/7366/files/73865747687.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1423/4017/files/a_travs_del_vaso_acordes.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_off000091bb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x91BB | 4908 bytes |
SHA-256: 28af29e335b280a12cd6703a523cbb6e34477ae86e3da2ec7987d2c1b2ea6f43 |
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font_01_sfnt_off0000a27c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA27C | 14656 bytes |
SHA-256: 33e27ce500d8fd6f065213cce4dfaca11a9eaf8ad90ef5bfe83cabb69fed881d |
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font_02_sfnt_off0000cfda.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFDA | 16308 bytes |
SHA-256: 8d971e6d57531a1973e4c74cbe83842513d2524a98b3fc5ba99f8fa549cd9abf |
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font_03_sfnt_off0000e576.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE576 | 4324 bytes |
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
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