MALICIOUS
254
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
T1059.001 PowerShell
The PDF file contains multiple heuristics indicating malicious intent, including a link to a known malicious redirector and a large number of external PDF links, likely for SEO manipulation. The document body text and embedded links suggest a social engineering lure, specifically a fake Google Chrome update, designed to trick users into clicking malicious URLs. The primary malicious URL identified is https://ttraff.ru/pify?keyword=google+chrome+update+version++free, which is likely used to deliver a secondary payload.
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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/pify?keyword=google+chrome+update+version++free In PDF document text
- http://rigap.claudiaturner.org/uploads/1/3/1/4/131483281/5163035.pdfIn PDF document text
- http://files.studioandronico.com/uploads/1/3/1/4/131483372/niribe.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/1/0435/0846/5828/files/pebugesiwotonujisoronaru.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2351/5294/files/imperative_form_worksheet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87932640634.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6246/0577/files/zatirodiwa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1009/7313/files/74728912198.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6097/7048/files/b_t_c_ki_full_form.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8778/0248/files/pepejijijobewod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7432/2586/files/dibosizaxo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8012/2532/files/kisusigubababufoxexor.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5847/1846/files/71092750700.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_off000062cf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x62CF | 5660 bytes |
SHA-256: aee3ab0f534005cae899c01870741b7a7d18242db03a26d0eaf657daaeea54ea |
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font_01_sfnt_off000075fa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x75FA | 10800 bytes |
SHA-256: 33830833a73ba5bd024d950ce052a788dacf12e6c5093bb2d164f5d589a29af9 |
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