MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a high number of embedded links, many pointing to shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Couplet care report sheet' and the malicious URL, suggesting a lure to trick the user into clicking the link. The ML classifier also strongly indicated maliciousness.
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=couplet+care+report+sheet In PDF document text
- http://files.inzonecoaching.com/uploads/1/3/2/3/132303219/7897598.pdfIn PDF document text
- http://nopipa.bellydancebyraena.com/uploads/1/3/2/8/132814050/vemavadavuzuge_xajodetiki_tiviget.pdfIn PDF document text
- http://files.orlandokb1.com/uploads/1/3/2/7/132710491/5917599.pdfIn PDF document text
- http://files.rgbeautybodyspa.com/uploads/1/3/2/6/132695242/tavufezibipivep_raxes_mozemajovela.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/1/0432/8721/6293/files/tri_county_community_college_moodle.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4094/8892/files/skate_3_cheat_codes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6636/8935/files/forumeteselumasez.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7439/6058/files/niduforudabapilora.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0453/4956/8667/files/algebra_in_msc_mathematics_notes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7264/3491/files/android_studio_gitignore_file.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6893/9672/files/jusijulepesam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7542/6721/files/cisco_3750v2_datasheet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6572/0486/files/piripomikugebesa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2634/1278/files/recommendation_letter_template_for_fellowship.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8501/1873/files/xixuwiguno.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007985.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7985 | 4928 bytes |
SHA-256: 3759c1d88dd6c0c51b394b1420005c944a60275e9b1eb836e28165de1909e5d0 |
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font_01_sfnt_off00008a3c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8A3C | 10572 bytes |
SHA-256: e250ec0e6beafcac5be8c93d045aa2bf69814833738c6d399e853373a489348c |
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font_02_sfnt_off0000ae9d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE9D | 16472 bytes |
SHA-256: 99805584694da40b03156dff3bf6f07dd1df52bbdd03b5ef66e00f913caf3980 |
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