MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `ttraff.ru`. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on `cdn.shopify.com` but some on other suspicious domains. The document body, though heavily obfuscated, contains the same redirector URL. The presence of a download button lure further supports a malicious intent to trick the user into navigating to the malicious link.
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=penguin+reader+level+3+pdf+download In PDF document text
- http://files.stevedurow.com/uploads/1/3/0/7/130738550/ccb7e9.pdfIn PDF document text
- http://files.geriatricsuamsrioa.org/uploads/1/3/1/3/131383384/eb518cf.pdfIn PDF document text
- http://files.jdeducation.org/uploads/1/3/1/6/131606630/424528.pdfIn PDF document text
- http://files.thenorthwoodsnews.com/uploads/1/3/1/4/131438190/dubuju.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/1/0437/3485/9941/files/28785283314.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4690/3709/files/pafenavavojopabijuze.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9350/8771/files/70885605431.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5625/9491/files/93182899538.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9663/6580/files/jumuxutu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/2829/7381/files/league_of_legends_not_opening_mac.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5196/6873/files/3046572499.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6970/2306/files/42782400679.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6917/8017/files/vacuna_antineumoccica.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5935/5558/files/monthly_attendance_register_format_for_employees.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004f37.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4F37 | 6044 bytes |
SHA-256: bb079e52f20d04782e6b74cca6daf2ffae21beb543aa54af5b81506ec8154730 |
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font_01_sfnt_off000063e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x63E6 | 5152 bytes |
SHA-256: 61a0f70e6e53e0a8c6d79c86aaec89615cd50f887d773c6632d3962cb05089bc |
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font_02_sfnt_off00007586.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7586 | 10240 bytes |
SHA-256: ee2139dff0ef5ab59657d6e0a5a2643c2efe87ce10cf55e24526302d8aad2b31 |
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font_03_sfnt_off000098ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x98AD | 4324 bytes |
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333 |
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