MALICIOUS
194
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, which is further supported by the presence of numerous other PDF links, many hosted on Shopify. The document body, though partially corrupted, contains text related to a 'Biblia de estudio reina valera pdf gratis' and the redirector URL also contains a similar keyword, indicating a lure for free content. The primary malicious URL is https://ttraff.cc/pify?keyword=biblia+de+estudio+reina+valera+pdf+gratis, which likely leads to further malicious content.
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.cc/pify?keyword=biblia+de+estudio+reina+valera+pdf+gratis In PDF document text
- http://vulatufam.multifunctionslab.com/uploads/1/3/1/4/131452883/3131779.pdfIn PDF document text
- http://files.gayedesigns.com/uploads/1/3/1/8/131856723/javoxefu_jenuse_lapekikokebi_vulolugisoxegud.pdfIn PDF document text
- http://files.mnjrc.com/uploads/1/3/1/0/131069978/naluzoke-kadarovet-metinuso-davujawutu.pdfIn PDF document text
- http://files.wholistichelp.com/uploads/1/3/2/3/132302859/3404040.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/1/0437/9590/6721/files/refageketulamifawe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2421/9293/files/12361674496.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7469/8902/files/1019767848.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7455/9893/files/fafesopejokujapu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2073/7950/files/lusovirusodofanurijikako.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4937/7177/files/kujunosogafaxodobirusizi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0878/5562/files/50414833304.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7405/9430/files/vuvavasira.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3217/2965/files/sivizediperozezek.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9242/5384/files/topozu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0537/0791/files/telagexelapalerimi.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000587f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x587F | 5460 bytes |
SHA-256: d4e37ff0b2d9c5d4df22490e26f36afd8d5ab04bdb7bae355b23e110215ef41e |
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font_01_sfnt_off00006b1b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B1B | 10984 bytes |
SHA-256: 7bb9502ff25f807f83a68dc986b60bfa176b9f9d8f5e7dfe39e2ab163bd32d77 |
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font_02_sfnt_off00008f2f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8F2F | 16092 bytes |
SHA-256: c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e |
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