MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'fleischner society glossary of terms'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation. The primary malicious IOC is the redirector URL.
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.cc/pify?keyword=fleischner+society+glossary+of+terms+for+thoracic+imaging+pdf In PDF document text
- http://files.eaglemountainvolleyball.com/uploads/1/3/1/3/131379540/37adb.pdfIn PDF document text
- http://files.allisondgarrett.com/uploads/1/3/0/7/130775180/7850469.pdfIn PDF document text
- http://files.cleanandleanmixes.net/uploads/1/3/0/8/130874141/lamawugulobazof_xubozaf.pdfIn PDF document text
- http://files.itsablessedlife.net/uploads/1/3/0/8/130874160/8448158.pdfIn PDF document text
- http://files.oakmesapta.com/uploads/1/3/0/7/130776790/lifumu-pedumi-pewobeb-zejefimirupen.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/1/0430/9791/5545/files/wokojavuf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3373/8911/files/public_finance_and_public_policy_gruber_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8867/4967/files/68419209892.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9776/7592/files/femosaxowosigum.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7798/3653/files/xomemojizosinisuzumuxab.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3058/5250/files/2553012749.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7981/1750/files/74854317655.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7974/6201/files/ropakepozovunabex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6665/3858/files/drdo_ceptam_9_notification_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4219/4083/files/71586285155.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0760/5918/files/6102223418.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4102/9276/files/tosub.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6245/1611/files/mutual_information_python.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7395/2158/files/nunerufemepekuvamefu.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_off00004e67.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4E67 | 5628 bytes |
SHA-256: fdc0cc893560f91c142e7fa202360c7316a5ba91fccb83d5dd2ccbbdc2a209d5 |
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font_01_sfnt_off0000616a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x616A | 9980 bytes |
SHA-256: 834587120abfface0f9c5bdd69ef1f93c11ce09dd9d72acc2752d94a61640119 |
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