MALICIOUS
214
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains embedded JavaScript and multiple external links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, 'https://ttraff.cc/pify?keyword=polyisocyanurate+insulation+board+data+sheet', is designed to redirect users to further malicious content. The document body, though partially corrupted, contains text related to 'Polyisocyanurate insulation board data sheet' and the wkhtmltopdf generator, suggesting a lure to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious.
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/pify?keyword=polyisocyanurate+insulation+board+data+sheet In PDF document text
- http://jolajego.nicolewijngaarden.com/uploads/1/3/1/4/131453574/dijiwanedesute_lujutegidi_vexapum.pdfIn PDF document text
- http://files.belavistaalqueve.com/uploads/1/3/0/7/130775735/gufuja.pdfIn PDF document text
- http://givefutu.pianowelder.com/uploads/1/3/1/6/131606260/1aef79122e86.pdfIn PDF document text
- http://mevetugex.audreysaxton.com/uploads/1/3/2/8/132814930/9923561.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/1/0434/1301/2637/files/pufisurivikasez.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/5472/5270/files/taxpayer_bill_of_rights.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3015/0300/files/79802130902.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0566/5703/files/rowasoxemowugebixavoro.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8495/5300/files/vector_calculus_marsden_6th_edition_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0230/6468/files/rekukafoliziparegi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5509/5712/files/zejekilabejitir.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6874/4099/files/xavufonojojadokujefej.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7592/8215/files/37931230933.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/6280/3097/files/bikini_body_guide_2._0.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3970/9605/files/best_performance_basketball_shoes_for_wide_feet.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_off0000671c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x671C | 5268 bytes |
SHA-256: 8e975fa14b40eab1a5a1fdbb45bf5a3c4ec62dd5c8a4358e3082b065f76961ed |
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font_01_sfnt_off000078f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x78F4 | 10544 bytes |
SHA-256: 4188b91f79426659bc55c9a2037fc684d1b9b37bfad1b37eb44968a642526bb8 |
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