MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be benign. However, a critical heuristic identified a link to a known malicious redirector infrastructure at `https://ttraff.ru/pify?keyword=learning+chinese+characters+pdf+free+download`. This, combined with the ML classifier flagging the PDF as malicious, suggests the document is designed to trick users into downloading further malware via a phishing lure. No scripts were extracted, but the presence of embedded URLs and the redirector link strongly indicate a malicious intent.
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=learning+chinese+characters+pdf+free+download In PDF document text
- http://files.simonemaurerflute.com/uploads/1/3/1/4/131438538/9944646.pdfIn PDF document text
- http://files.modga.net/uploads/1/3/2/6/132695361/dexemorogamebuw.pdfIn PDF document text
- http://files.bringmorehappy.com/uploads/1/3/0/8/130874403/6077982.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/1/0446/7975/7977/files/butterball_electric_turkey_fryer_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8872/3616/files/71969025066.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/0193/6033/files/makkar_ielts_speaking_2020_jan_to_april.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/8688/6552/files/waxesemitarorotalevupo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9277/8912/files/60740971184.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1251/4204/files/minecraft_eye_of_ender_recipe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8365/1490/files/xemaxumabomewaluxubimobox.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/1568/2717/files/sremmlife_2_download_zip.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6400/8605/files/32123792142.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4891/9450/files/72663033043.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/6164/7262/files/89746960104.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7683/7785/files/babimutodewebarimapidum.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8198/0317/files/92163443730.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91960476686.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007f7c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7F7C | 3192 bytes |
SHA-256: 4816704e937d9737dca91a9d17bd7e657e44b6224c4460270cce1ce5b6849520 |
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font_01_sfnt_off00008aea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8AEA | 5448 bytes |
SHA-256: 4c1af73189e2f221acd0cc285b6153ca89773d646c5fb31cfc8f2c46b3a1a83d |
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font_02_sfnt_off00009d89.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9D89 | 10044 bytes |
SHA-256: 769879750378bd7e75b1fa6e61bd9d7b21afc35be1feeeb8555fac0bee6f977b |
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