MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious link, https://ttraff.com/pify?keyword=process+planning+and+cost+estimation+textbook+pdf, is designed to lure users into clicking by appearing as a search result for a textbook. The document body, though heavily obfuscated, contains references to the same malicious URL and appears to be generated by wkhtmltopdf, a tool often used to create malicious PDFs. The presence of a link farm further supports the malicious intent.
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.com/pify?keyword=process+planning+and+cost+estimation+textbook+pdf In PDF document text
- http://files.brcwrt.com/uploads/1/3/1/4/131409090/1113484.pdfIn PDF document text
- http://juwoza.brentkinworthy.com/uploads/1/3/0/7/130775162/jarav-sidabepud-bekunabuzo.pdfIn PDF document text
- http://files.erictigley.com/uploads/1/3/1/4/131409264/0e52cf8.pdfIn PDF document text
- http://files.charlottemullich.com/uploads/1/3/1/4/131437064/zanalunotaro-kofabilegepokoz.pdfIn PDF document text
- http://files.westwoodgrowers.com/uploads/1/3/0/8/130814432/sebomu.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/1/0433/9305/6933/files/cub_cadet_owners_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8369/4247/files/jemokibulixefugog.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6667/1782/files/50095464129.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6825/2565/files/36932161162.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5742/2229/files/61218661005.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4855/0050/files/titrasi_argentometri.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5511/9512/files/99196858045.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5637/3659/files/begegotovelolutafiz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96226605796.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2550/6208/files/42_constitutional_amendment_act.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7945/7173/files/acuerdos_internacionales_del_medio_ambiente.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69143450337.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5463/5937/files/albertine_disparue_proust.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4193/7818/files/53537081162.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007200.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7200 | 5748 bytes |
SHA-256: 51fd50adb5da335c038a43dbda09c616265be222af3722e66596de5c5b9e7654 |
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font_01_sfnt_off00008578.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8578 | 2116 bytes |
SHA-256: 49f1c345582212729590e0456707ca92d3838aef8cba26fbcaa28f8c5b0a0640 |
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font_02_sfnt_off00008f43.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8F43 | 13996 bytes |
SHA-256: 686c14202174b3a22f6a2825ce7fc2aaf94f2b4b891265a61e79d6a6c19988f4 |
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