MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link that redirects to a malicious URL, disguised as a 'Thomas calculus 12th edition solution manual'. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms this redirection to known malicious infrastructure. The ML_NYX_PDF_MALICIOUS classifier also strongly indicates malicious intent. The document body, though heavily obfuscated, contains the same lure text and the malicious URL.
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=thomas+calculus+12th+edition+solution+manual
- http://files.friendsofmarplestation.co.uk/uploads/1/3/0/8/130814205/kugugutulapuwejase.pdf
- http://files.forgedtecholsters.com/uploads/1/3/1/4/131437225/fedepidun.pdf
- http://files.lucypetersonwatkins.com/uploads/1/3/0/8/130874329/fd4c5.pdf
- http://files.nowwhatmemphis.com/uploads/1/3/0/9/130969075/lesezefesaku_jolimeto.pdf
- https://cdn.shopify.com/s/files/1/0428/4815/7859/files/toxiwovulefoxuvurirazedud.pdf
- https://cdn.shopify.com/s/files/1/0430/5803/6889/files/xanumepudizimamejatap.pdf
- https://cdn.shopify.com/s/files/1/0432/5687/3128/files/4441677490.pdf
- https://cdn.shopify.com/s/files/1/0430/9575/2864/files/refiwemezumesakebawajogu.pdf
- https://cdn.shopify.com/s/files/1/0434/6429/4557/files/32512323185.pdf
- https://cdn.shopify.com/s/files/1/0434/4184/8470/files/lovefesevezadojizamumidox.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ferenap.pdf
- https://cdn.shopify.com/s/files/1/0432/3105/1943/files/1994_ford_taurus_sho.pdf
- https://cdn.shopify.com/s/files/1/0435/4814/7867/files/58474791589.pdf
- https://cdn.shopify.com/s/files/1/0433/1008/8357/files/lijuseforinivu.pdf
- https://cdn.shopify.com/s/files/1/0430/5158/1597/files/kugesikaris.pdf
- https://cdn.shopify.com/s/files/1/0433/1952/5534/files/64935033819.pdf
- https://cdn.shopify.com/s/files/1/0430/6993/1671/files/19115444543.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_off000100db.binbafa6e997f15452f714ecbb550b1de192ae0cce86a06a4816b5fa49cf2da8bf1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100DB | 5216 bytes |
font_01_sfnt_off00011277.bin374778bfab62c750e4bbebf69c3538a2ce86612db03fda8f625512f55eeb8fcf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11277 | 19392 bytes |
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