MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a 'Cpa compilation report sample'. This redirector likely leads to further malicious content or exploits. The PDF also functions as a link farm, pointing to numerous external PDFs, many hosted on Shopify. The ML classifier strongly indicated maliciousness, supporting the heuristic findings.
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.cc/pify?keyword=cpa+compilation+report+sample In PDF document text
- http://files.alpenaoptimistclub.com/uploads/1/3/0/7/130738928/342ff1.pdfIn PDF document text
- http://files.smithprojects.com/uploads/1/3/2/7/132741433/gibidekofo-matidexe.pdfIn PDF document text
- http://files.academycounselling.com/uploads/1/3/2/6/132695679/sokepobegid.pdfIn PDF document text
- http://febovena.baystatesurgery.org/uploads/1/3/1/1/131164250/33a46b03.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78394199391.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5872/5015/files/ragopetuvesijogigafize.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6173/8662/files/essentials_of_cardiopulmonary_physical_therapy_4e.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7694/3000/files/83430403363.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0464/8465/2184/files/math_gallon_man_worksheet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0935/1585/files/91885058681.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7144/6939/files/current_affairs_awards_and_honours_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7668/0870/files/gumif.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/6548/1118/files/canoeing_merit_badge_pamphlet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2345/6661/files/zofobinixojivikasufed.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9938/1157/files/nudawewaziw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0443/1210/1020/files/imposible_cargar_la_imagen_html2pdf.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006939.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6939 | 4888 bytes |
SHA-256: 4a5f5f0b76d39baac39fba4e27bf20781f24ab8cd0a9f84594920105a32b36b1 |
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font_01_sfnt_off000079ae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x79AE | 10572 bytes |
SHA-256: bbcdda86ce859652f7b4fd20801ef5a371b49cc790af071ded6e117f93be0751 |
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font_02_sfnt_off00009ded.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9DED | 16364 bytes |
SHA-256: 1c8bc4bf779fdf5fdd428ab6ddc6a1665d3fdc1c26b4364692bd94c1ed605b78 |
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font_03_sfnt_off0000b3c1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3C1 | 4324 bytes |
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361 |
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