MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link farm designed to redirect users to malicious infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=programming+in+ansi+c+7th+edition+book+pdf', suggesting a lure related to a programming book. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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=programming+in+ansi+c+7th+edition+book+pdf
- http://wiguwo.mazarchery.com/uploads/1/3/1/3/131398020/4efd7ce8ab8.pdf
- http://jizejadaw.chrishopgood.co.uk/uploads/1/3/2/7/132740873/zosabujowe-fijupevi-pikanumu-merijovu.pdf
- http://jejir.arunasamivelu.net/uploads/1/3/0/9/130969723/leminofogox.pdf
- https://cdn.shopify.com/s/files/1/0429/0753/3475/files/darnified_ui_oblivion.pdf
- https://cdn.shopify.com/s/files/1/0428/1552/0935/files/rigatati.pdf
- https://cdn.shopify.com/s/files/1/0435/5093/3156/files/fakek.pdf
- https://cdn.shopify.com/s/files/1/0431/5804/4823/files/cetoacidosis_diabetica_minsal.pdf
- https://cdn.shopify.com/s/files/1/0433/8457/0019/files/52897132040.pdf
- https://cdn.shopify.com/s/files/1/0430/8857/6673/files/github_push_to_new_repo.pdf
- https://cdn.shopify.com/s/files/1/0437/4121/6919/files/lsit_sample_test.pdf
- https://cdn.shopify.com/s/files/1/0427/4018/7303/files/gedirusuderuxaxoxiteti.pdf
- https://cdn.shopify.com/s/files/1/0427/5847/1846/files/67170823383.pdf
- https://cdn.shopify.com/s/files/1/0434/2883/9586/files/san_diego_fbn.pdf
- https://cdn.shopify.com/s/files/1/0430/3591/8489/files/30690672557.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005577.binc8d217ee6956b7036a872d74d7432b73126da59b54707cb3367ab9fd7d54e1ec |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5577 | 5820 bytes |
font_01_sfnt_off00006923.bin753df6f352f3b261bda51bce852455c65ce48cfa33332ae69ba615fbb96509f3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6923 | 10296 bytes |
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