MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm and a redirector URL that is flagged as malicious. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'Visual studio code json formatter extension'. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm designed to attract search engine traffic and potentially distribute malicious content. The primary malicious indicator is the redirector URL, which is likely used to funnel victims to a malicious site.
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=visual+studio+code+json+formatter+extension In PDF document text
- http://files.denaults.com/uploads/1/3/2/6/132696465/c444b1.pdfIn PDF document text
- http://sawis.uscycs.org/uploads/1/3/1/3/131384169/9657684.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/1/0427/7246/3772/files/44767792421.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8330/0005/files/540019148.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/3720/2344/files/jifiwuwo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1723/8685/files/balu_telugu_movie_hd_video_songs.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3204/9824/files/telugu_movie_bejawada_songs.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1538/9855/files/arap_bahar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5377/7045/files/nordictrack_audiostrider_990.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4616/4897/files/91172978034.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9202/6271/files/36054124077.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0597/5462/files/ata_spec_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0197/0837/files/rakanodavakasitolinun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5039/4019/files/zumedererabusume.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0314/0506/files/77367795033.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_off000061df.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x61DF | 5276 bytes |
SHA-256: 6c2ac0179a076d318408a3e84e6dee7f92aa8231d4cdf5891240593c484b50f4 |
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font_01_sfnt_off000073b6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73B6 | 2092 bytes |
SHA-256: 9fcfd2b2c12c9d480c0beec3ee39f05b9e518edc5177a7a5fcc68dff0371f8a2 |
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font_02_sfnt_off00007d57.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7D57 | 10508 bytes |
SHA-256: a64782b7bc0f8425fbb8a14f0532538aa6f417f84aa69ead99bcb6a05510a0ce |
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font_03_sfnt_off0000a179.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA179 | 16576 bytes |
SHA-256: ada5d992eec2c877c099a8d0ce6cd546192fbd5f0f6a018c2527602411a0292c |
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