MALICIOUS
222
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains multiple heuristics indicating malicious intent, including a critical finding for a malicious redirector link and a link farm. The document body, though heavily obfuscated, contains a URL that matches the redirector link. The presence of a callback lure suggests a potential phishing or tech-support scam pretext. No scripts were extracted from this sample.
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) or Microsoft license-boilerplate 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.ru/pify?keyword=ascites+in+broilers+pdf In PDF document text
- http://datif.stephanrichter.com.au/uploads/1/3/0/9/130969204/1fd15309.pdfIn PDF document text
- http://files.devinbeliveau.com/uploads/1/3/2/6/132682210/2319511.pdfIn PDF document text
- http://files.nejnamc.org/uploads/1/3/1/6/131607346/bujowadatasivo.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/1/0430/1222/7225/files/wimixutorus.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7940/1634/files/office_365_product_key.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0448/9605/9547/files/nikola_tesla_biography.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3243/5093/files/sears_water_softeners.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1848/4888/files/11932770885.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7737/8972/files/51506051219.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0098/7811/files/erectile_dysfunction_protocol_food_list.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5350/4917/files/47504757805.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0980/1365/files/essential_mathematics_for_economic_analysis_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/0459/0242/files/kadefuweravit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5170/3706/files/statistical_data_mining_using_sas_applications_second_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7959/8229/files/ambitious_science_teaching.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_off000158b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x158B4 | 5068 bytes |
SHA-256: 33a634f0ddbfb3e70eedf81b07495b7969c406a0568b2fbc3f50685d0061903c |
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font_01_sfnt_off000169fe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x169FE | 10996 bytes |
SHA-256: d240493641d7c8416c9869d4260786e39096df15e8e21493240060e223cfd7ac |
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