MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to chess puzzles and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly flagged this PDF as malicious.
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.com/pify?keyword=chess+puzzles+mate+in+1+pdf
- http://files.greatheadma.com/uploads/1/3/1/4/131438891/9f271.pdf
- http://lupejek.jci-gardena.org/uploads/1/3/2/6/132680813/2489f40d0d4ff.pdf
- http://kigutu.creativedentaldesignsaz.com/uploads/1/3/2/8/132814930/nufow-tovomu-gejusaza.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/3173/2132/files/tasavemolezimaduwa.pdf
- https://cdn.shopify.com/s/files/1/0438/7084/7131/files/home_beauty_and_the_beast_piano_sheet_music.pdf
- https://cdn.shopify.com/s/files/1/0431/3264/9636/files/fatotifudobobanofu.pdf
- https://cdn.shopify.com/s/files/1/0431/7921/2960/files/sign_o_the_times_lyrics.pdf
- https://cdn.shopify.com/s/files/1/0438/3365/5446/files/vapamabuxuxonu.pdf
- https://cdn.shopify.com/s/files/1/0433/8978/0124/files/72530765449.pdf
- https://cdn.shopify.com/s/files/1/0431/3976/0285/files/aphasia_download.pdf
- https://cdn.shopify.com/s/files/1/0431/1724/8672/files/14550759222.pdf
- https://cdn.shopify.com/s/files/1/0434/8284/1250/files/albert_camus_sisyphus.pdf
- https://cdn.shopify.com/s/files/1/0428/5900/4070/files/9249325924.pdf
- https://cdn.shopify.com/s/files/1/0436/9681/6282/files/44434206265.pdf
- https://cdn.shopify.com/s/files/1/0429/3997/3788/files/phonemic_chart_exercises.pdf
- https://cdn.shopify.com/s/files/1/0429/5829/1093/files/72492899467.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006c59.bin5496cf18092b8018bbc66cd178a710cc7564ba80a5ce3745860f2e7570e0b6b1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6C59 | 5192 bytes |
font_01_sfnt_off00007df7.bin40a333901b5733caeb5b00bfeeabbab0a4fc78bd3b472a850c70c53ef8c6eee0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7DF7 | 10436 bytes |
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