MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF file contains numerous embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains text suggesting it is an 'answer sheet template', likely a lure to encourage clicks. The presence of a 'download button' heuristic further supports a social engineering attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=answer+sheet+template+1+50+pdf In PDF document text
- http://files.thenourishedbump.com/uploads/1/3/1/4/131453215/bca0c1f53b8179.pdfIn PDF document text
- http://files.revolutionpapers.com/uploads/1/3/1/4/131413905/d8515c4.pdfIn PDF document text
- http://nowate.area59district47aa.org/uploads/1/3/0/7/130739169/sekut.pdfIn PDF document text
- http://files.heroesla.org/uploads/1/3/1/3/131398097/b826ad1.pdfIn PDF document text
- http://suwula.christistewart.com/uploads/1/3/1/6/131606289/givara.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/1/0433/4904/9499/files/lubazuwiti.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/0171/4587/files/nogowunamovonowimido.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/9081/8712/files/fekufi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3445/1874/files/zekopuvi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6176/3480/files/facebook_ads_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/8484/7006/files/mofitezuvadikakituwi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9879/1322/files/botswana_public_health_act_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7767/1843/files/misanebabudulalupulagafow.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1608/5923/files/36867249947.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1816/6167/files/mathematics_1st_year_notes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9161/6153/files/dukinerom.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2636/6111/files/47685135602.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7689/5398/files/59029943021.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3751/4133/files/20720366019.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006774.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6774 | 5680 bytes |
SHA-256: 437512a7ea37935c2a54928a5d39cb1584396b02842946228cf56c49e9de43cc |
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font_01_sfnt_off00007aab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7AAB | 10260 bytes |
SHA-256: 654a8c865f430e258c6b7ed584f6461c474562b060989b281bd5d867d20fe1af |
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