MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users into downloading further malicious content. The document body, though heavily obfuscated, contains the same URL and appears to be a lure for 'Becker CPA exam review 2020 pdf'. The presence of numerous external PDF links, many pointing to Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, but the primary attack vector is the malicious URL embedded within the document.
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=becker+cpa+exam+review+2020+pdf In PDF document text
- http://sanetevun.larryjfalls.com/uploads/1/3/2/7/132712207/62234c2d335.pdfIn PDF document text
- http://files.amsetcen.com/uploads/1/3/0/8/130874250/1530216.pdfIn PDF document text
- http://files.elginparkathletics.com/uploads/1/3/1/4/131406413/xikudenaw.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0432/7315/8806/files/73925123093.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2440/8991/files/87480832410.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6936/5654/files/37882361399.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5366/1854/files/zapojotojazikox.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5672/6165/files/sociologia_della_comunicazione.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5259/6374/files/25832798452.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1373/2512/files/davokigezere.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9504/6824/files/kosekoninomir.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8154/7428/files/754829588.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2778/4095/files/gipewewibedopafikotifa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6305/0394/files/62777871512.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0085/5706/files/90630556425.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1270/1860/files/18699804323.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_off0000a444.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA444 | 5192 bytes |
SHA-256: 4f46d70af526f0f3a08c79b03f460e065bf1be2a28c5af296fe68fe39f4aba06 |
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font_01_sfnt_off0000b603.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB603 | 11148 bytes |
SHA-256: 5e4a70e6abb3ca14b4611e4d5a985c4dccec31bbe02c695af56b1a099d9b9e85 |
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font_02_sfnt_off0000dc21.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC21 | 16092 bytes |
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848 |
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font_03_sfnt_off0000f0e9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0E9 | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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