MALICIOUS
222
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.001 Malicious Link
The PDF contains multiple heuristics indicating malicious redirection and a link farm, with a primary malicious redirector URL identified. The document body, though heavily obfuscated, contains a reference to the malicious URL. The presence of urgency and callback lures suggests a phishing or scam attempt. The primary malicious IOC is the ttraff.cc redirector, which likely leads to a further stage of the attack.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 7
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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) documents that carry no urgency or charge/dispute escalation.
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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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=probability+and+statistics+for+data+science+matloff+pdf In PDF document text
- http://files.tenstringedlyre.com/uploads/1/3/1/4/131406717/fcd62e2f03f1f76.pdfIn PDF document text
- http://files.chasebutlerblog.com/uploads/1/3/1/4/131407469/1493004b.pdfIn PDF document text
- http://files.emilysasia.com/uploads/1/3/1/4/131454286/zoxunutakava.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/1/0440/8170/9206/files/43439816437.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8461/8653/files/84637323527.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98559129476.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4045/6360/files/94905752364.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9236/9823/files/partial_differentiation_chain_rule.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8410/3332/files/543885728.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2758/6472/files/notebook_paper_wide_ruled.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5802/7928/files/sidiliwoboberonipivusutuz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7006/2754/files/rixaxedofudawiwepevixo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0446/3670/0835/files/couper_gratuit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9316/4199/files/72184543948.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00019fb8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x19FB8 | 5544 bytes |
SHA-256: 30716cac4ad6f7d8af5266cba8cc3c1b6a7f85f91497b393e46c6f4c199a83f0 |
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font_01_sfnt_off0001b27f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1B27F | 15160 bytes |
SHA-256: fc839c7be78ae0f8e52545f3fbd1bd0bf5662edca30d145de1574c212b4c3f02 |
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font_02_sfnt_off0001e2d8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1E2D8 | 16164 bytes |
SHA-256: ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1 |
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