MALICIOUS
214
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF contains multiple embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that also points to this malicious redirector. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm designed to obscure the malicious destination. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
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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/wb?keyword=hunter%20scissor%20lift%20manual In PDF document text
- http://liluror.jenlarussa.com/uploads/1/3/0/7/130775953/kamip_xobokovowapoz_fegimotijira.pdfIn PDF document text
- http://files.dwarfhollowfarmstead.com/uploads/1/3/0/7/130775434/zonito-sojusaferasuf.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/1/0433/3626/9983/files/global_affine_differential_geometry_of_hypersurfaces.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4548/4706/files/mowoxapenu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1384/0794/files/81381018351.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7151/2480/files/98480881174.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3033/8966/files/calculus_for_scientists_and_engineers_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4117/7252/files/after_effects_the_power_of_expression_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2492/5347/files/88000143832.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3383/7219/files/turning_process_in_lathe_machine.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9167/3763/files/isotopic_abundance_worksheet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9085/3540/files/calvin_and_hobbes_comics.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1760/0165/files/93903990265.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0450/6117/7507/files/blackstone_real_estate_partners_viii.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_off0000a1a2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA1A2 | 4988 bytes |
SHA-256: 0823cfa3b79ba8b66e849cf1701167af9d509364b0b48ed52f2ecd9c155641cd |
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font_01_sfnt_off0000b275.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB275 | 17736 bytes |
SHA-256: 991cba25aaba56717acb24bc86e05652e0c5e9535da7545a9a401aaab8b6d873 |
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