MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links to redirector infrastructure, specifically pointing to 'ttraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'biocalculus solutions manual pdf'. The presence of multiple external PDF links and a malicious redirector suggests an attempt to drive traffic to a malicious site, likely for phishing or malware distribution.
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.ru/pify?keyword=biocalculus+solutions+manual+pdf In PDF document text
- http://files.carolinedancewest.com/uploads/1/3/0/8/130814232/sidirukuwakezezafe.pdfIn PDF document text
- http://files.alexkerrigan.com/uploads/1/3/0/9/130969089/c87db73db383d.pdfIn PDF document text
- http://files.cookingwithkelsey.com/uploads/1/3/2/7/132740701/3653935.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4635/4594/files/9303106259.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5553/8595/files/magi_the_kingdom_of_magic.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3196/9438/files/78249666491.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/7930/1275/files/kugowajofalajazakevozazo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2742/3654/files/rasidujusijegiwetofuzor.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/6745/5128/files/fapatufejilutomuvimuwero.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9432/6944/files/40436256920.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1329/9620/files/wutatukonajuwigamux.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2805/4169/files/xizamejupuregelixotufoga.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0069/1862/files/nugamakujisalimexojorola.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/4500/1115/files/rockstar_social_club_down.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2493/3283/files/xisew.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00009f18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9F18 | 5256 bytes |
SHA-256: 92f6060476c3462ab48952ed9d490fdb20f1830f96eeb38191a1e79c478fa654 |
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font_01_sfnt_off0000b0df.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB0DF | 12080 bytes |
SHA-256: 36fc03d2db9c1fc7c420bd5d5627fd5f6e7d075117d816560513c4ba8eff51b7 |
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font_02_sfnt_off0000d987.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD987 | 16112 bytes |
SHA-256: 04c641d0aedeaa8c494855f42a2e9ae6fad9e3679126e7dc5c08fccc4b41c292 |
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