MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document contains a large number of embedded links, many of which point to external resources hosted on platforms like Shopify and other file-sharing sites. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=ansys+cfd+post'. The document body, though heavily obfuscated, contains references to 'Ansys cfd post' and 'wkhtmltopdf', suggesting a lure to disguise the malicious link farm. The primary attack pattern involves redirecting users to potentially harmful websites.
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=ansys+cfd+post In PDF document text
- http://files.nycmoneymavens.com/uploads/1/3/1/8/131856815/jaxono_tanake.pdfIn PDF document text
- http://files.forceofnaturehandhewnconstruction.ca/uploads/1/3/0/7/130738714/gulumabaneg_jorabumibiroxe_didosiva_nipazakugekil.pdfIn PDF document text
- http://files.unpsoccer.org/uploads/1/3/0/7/130740517/tenejezugaf_wagagate.pdfIn PDF document text
- http://files.yendorearthing-n-wellness.com/uploads/1/3/1/4/131438216/vufibedopiwos.pdfIn PDF document text
- http://kafedos.goldentoadtheatre.com/uploads/1/3/1/4/131453698/b151900b3b294.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/1/0436/0493/4814/files/wikujofitowi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2066/5510/files/rexuzef.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7451/8180/files/sitikebasezugobumo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9728/3992/files/augusto_monterroso_microcuentos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/6332/6358/files/kipud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1892/7776/files/70038944269.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2631/6455/files/botw_raw_gourmet_meat.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0450/5364/0856/files/electric_circuits_10th_edition_solutions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8799/5814/files/86957091224.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0727/0297/files/wokawupufesexenuju.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6624/4766/files/medical_terminology_for_health_professions_7th_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0558/3266/files/bukhari_hadees_tamil_download.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_off0000611a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x611A | 4904 bytes |
SHA-256: 91984df3d8e96a7348bcd9d2043a35cae8a7761b61535a995378952647980285 |
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font_01_sfnt_off000071e3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71E3 | 10468 bytes |
SHA-256: b43deeaead341e34ae84cf2ae301a4a4376d450e92b3bd476eb6833a90747552 |
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