MALICIOUS
214
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/wb?keyword=essentials%20of%20human%20anatomy%20and%20physiology%207th%20edition%20lab%20manual, which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, also contains this URL and other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic to distribute malicious content.
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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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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/wb?keyword=essentials%20of%20human%20anatomy%20and%20physiology%207th%20edition%20lab%20manual In PDF document text
- http://files.fortworthrowing.com/uploads/1/3/2/6/132696323/3116487.pdfIn PDF document text
- http://files.bournemouthoutriggercanoeclub.com/uploads/1/3/1/4/131437064/losesubexogomulareju.pdfIn PDF document text
- http://files.swinganoia.com/uploads/1/3/1/6/131607440/subarijonel-joluzira-mobubo-niwawigese.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/1/0428/4357/0343/files/building_maintenance_engineer_job_description.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9502/4033/files/42687657517.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5283/4711/files/panizimugo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6214/0840/files/98682141869.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5294/8901/files/belajar_coding_html.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0020/8294/files/diy_laptop_stand.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9415/5169/files/calendario_2020_mexico_dias_festivos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4272/5275/files/verulamenudabewad.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5815/1072/files/baldor_motor_catalogue.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3876/7266/files/9959624768.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8217/6920/files/wilogabamosuwedo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6895/6565/files/bimiguwafiwe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6182/1083/files/29537400759.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_off00006223.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6223 | 5640 bytes |
SHA-256: 60883f32e53f30865347793313354f83bf9dd1adfcd47bf786b00bb4c8085beb |
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font_01_sfnt_off00007536.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7536 | 9780 bytes |
SHA-256: 5a0b4415b11b972cf13d04a1d5548052ceff56d35f57d00d76d2eb2fb16d609f |
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