MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'free reading worksheets' and the malicious URL, suggesting a lure. The heuristic firings confirm the presence of a malicious redirector and a link farm, indicating an attempt to drive traffic to malicious infrastructure.
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=free+reading+worksheets+for+5th+grade In PDF document text
- http://files.soulsai.studio/uploads/1/3/1/6/131606550/46d94.pdfIn PDF document text
- http://files.oncopods.com/uploads/1/3/1/8/131856518/dunoxuz_kudanozeta.pdfIn PDF document text
- http://files.obempire.com/uploads/1/3/0/7/130738752/newafigaboriwog.pdfIn PDF document text
- http://bizurireb.jaymcclellan.com/uploads/1/3/2/7/132712358/xilowigupifuvodonep.pdfIn PDF document text
- http://gutexe.greenkeyconcreteforms.com/uploads/1/3/0/7/130740141/fevoge.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/1/0439/1639/4648/files/serafokakezeduwabuvirem.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8916/5478/files/cpwd_works_manual_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9482/7415/files/jiveromorifes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3976/0285/files/bba_all_subjects_notes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/9748/7512/files/jobibiwikesijawopitu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0473/1300/files/fiwuluniropupepib.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3332/9817/files/13209280164.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lasuzopaxikabade.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7049/6672/files/dofadetijunete.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/9887/9640/files/72428302145.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46905239833.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7315/8821/files/liveboj.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000066cd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x66CD | 5160 bytes |
SHA-256: e6c10113b3776448e0f135642feacd81c80e9b87070f871e89681d4b33b0f0d2 |
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font_01_sfnt_off0000786d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x786D | 10764 bytes |
SHA-256: 3acab988cd721a8751b0eb6eb46999816c3712e20fafa489a9cc0529026ccb5c |
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font_02_sfnt_off00009d0a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9D0A | 4324 bytes |
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361 |
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