MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, with a large number of embedded URLs pointing to external PDF files, many hosted on Shopify. One of the embedded URLs, 'https://ttraff.com/pify?keyword=substitution+effect+definition+pdf', is identified as a malicious redirector. The document body is heavily obfuscated and contains what appears to be the same malicious URL embedded within it.
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.com/pify?keyword=substitution+effect+definition+pdf In PDF document text
- http://dezeda.hangrynoodle.com/uploads/1/3/1/4/131407535/tivapajoliw.pdfIn PDF document text
- http://files.rhythmresearchresources.net/uploads/1/3/1/6/131606127/gelizoxi-mevep-xuzumifam.pdfIn PDF document text
- http://files.happygreenjeans.com/uploads/1/3/1/4/131453276/momive-situkotor-wurazub.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/1/0433/0687/7080/files/93336639176.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/2606/9157/files/20809386464.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9358/0181/files/cheats_of_gta_vice_city_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8791/1319/files/sinaji.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/2108/0475/files/adc_analog_digital_converter.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2821/6983/files/document_class_latex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0574/7108/files/serology_test_procedure.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1585/6550/files/8931067117.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3555/0119/files/disasawaduvulenutige.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8803/6505/files/botulism_symptoms.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0879/4530/files/puben.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuvitew.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2135/3635/files/38663819976.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4185/7448/files/ticket_reservation_form.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3365/5446/files/sazajatolarowolavufuraj.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_off00006197.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6197 | 5056 bytes |
SHA-256: 5925c3dfdd8073a356f0aef792d5baba7f5079394c6431ba6589d5deae506d00 |
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font_01_sfnt_off000072dc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x72DC | 10536 bytes |
SHA-256: 1f9448db55950c5c238f7659beb64071ae1c1f74f22bde2d46333845a8ddcc80 |
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