MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, many of which point to domains that host further PDF files, suggesting a link farm for SEO poisoning. The primary malicious link redirects to 'ttraff.ru', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure for a 'cryptic quiz answer key'. No scripts were extracted from this sample.
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.ru/pify?keyword=cryptic+quiz+e-+9+answer+key In PDF document text
- http://files.jragourdart.com/uploads/1/3/1/4/131406749/3114f1dc136d.pdfIn PDF document text
- http://zekit.warandpeacebuilding.com/uploads/1/3/1/3/131383309/nusebusug_tozedireveje_kuzakukekuk_bibikamab.pdfIn PDF document text
- http://files.elitehometeamllc.com/uploads/1/3/0/9/130969440/184f0c990db23fb.pdfIn PDF document text
- http://files.equusmedendi.com/uploads/1/3/0/7/130739719/2747708.pdfIn PDF document text
- http://files.ewb-utsa.org/uploads/1/3/1/4/131437236/gojejabe-movatuge-zusefisebu.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/1/0429/7038/2490/files/80203050745.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7878/5951/files/english_conversation_lessons_for_beginners.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kebiwubinixakagaxirefu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3551/6318/files/lolakokagapapunazafegar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6859/7158/files/android_developer_guide_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1648/6040/files/canadian_accreditation_standards_for_hospitals.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4056/9494/files/manual_autocad_civil_3d_2020_espaol.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8298/1278/files/mukalapesemimulowipibut.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6726/9532/files/tenizibukatibizalu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4638/7367/files/big_data_concepts_and_architecture.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9196/7652/files/nufufununixonenowuxebojab.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64630415929.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_off00006c92.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6C92 | 3304 bytes |
SHA-256: 2c0663fcfd3c2802c3afaffd80ff40695c802c323bf86d314ecaf934ce3d6b8c |
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font_01_sfnt_off0000786c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x786C | 5420 bytes |
SHA-256: c827d5aa42acd6c541a5010eda13211091e0d91cec9baf1789af223b6be084cb |
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font_02_sfnt_off00008b18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8B18 | 11464 bytes |
SHA-256: c22e6b27e5af80c132b0286b648c01ac1c0a1f7352fc32a51293d3c2db9ed443 |
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font_03_sfnt_off0000b245.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB245 | 16204 bytes |
SHA-256: 31aa257675234f953cb39254c73a0c002637764ec2691c470e0912636c3685cf |
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