MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. Another critical heuristic indicates a link farm, suggesting SEO manipulation to attract victims. The presence of a 'download button' heuristic further supports the lure-based attack pattern. The primary IOC is the malicious redirector URL.
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=algebraic+identities+class+8+worksheets+pdf In PDF document text
- http://bifubigo.simplyinspiringimages.com/uploads/1/3/1/4/131408027/bafevalibujod_murisupalis_lapogumobife.pdfIn PDF document text
- http://files.christmaslunches.co.uk/uploads/1/3/1/3/131398259/a46b34c10d44451.pdfIn PDF document text
- http://files.garymkaye.com/uploads/1/3/2/6/132682929/zosoburobe.pdfIn PDF document text
- http://files.currantcreekoutfitters.net/uploads/1/3/2/6/132681836/wapogesunidikum.pdfIn PDF document text
- http://files.inkycycling.com/uploads/1/3/1/4/131483009/mumakowixolif-dupoxu.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/1/0433/0687/7080/files/vibamiwa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0819/6767/files/19519151956.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0267/4845/files/kevidarek.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8036/7780/files/2562196286.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7728/0671/files/ribokaba.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4373/2126/files/48936591991.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0428/7383/files/36366255426.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7552/6051/files/probability_measure.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6214/8763/files/47828473233.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_off00006f62.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F62 | 5684 bytes |
SHA-256: 42171948ef5c4197fc8431fd7d91aba67836da239bff52fca63dd7451f2e0f15 |
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font_01_sfnt_off000082b9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x82B9 | 14864 bytes |
SHA-256: 7e7f97c5ccc164605dd7482fc4f97b32874216967cb2bcab9c2571295e2ab3f3 |
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font_02_sfnt_off0000b0e7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB0E7 | 16204 bytes |
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e |
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font_03_sfnt_off0000c617.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC617 | 4324 bytes |
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
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