MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though obfuscated, contains the same malicious URL, suggesting an attempt to trick users into clicking it for a supposed 'statistical quality control mcq pdf'. The presence of a large number of external PDF links further indicates a link farm or SEO manipulation tactic to distribute 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.ru/pify?keyword=statistical+quality+control+mcq+pdf In PDF document text
- http://files.bookmobiledoorcounty.org/uploads/1/3/0/8/130813509/e260c922014bdd6.pdfIn PDF document text
- http://files.sarahbrothersbot.com/uploads/1/3/1/3/131384555/dukinenugadinov-xukubola-mogigib-mujobutavopoput.pdfIn PDF document text
- http://kuzimekoz.casacose.com/uploads/1/3/1/4/131407469/vubuvudixozisan.pdfIn PDF document text
- http://xapigura.skmagicpromotion.com/uploads/1/3/0/7/130776687/3d361dacaf9548.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/1/0428/9835/8432/files/1028728638.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3668/0098/files/tagope.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3929/3589/files/3835807328.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6230/3637/files/affidavit_letter_for_immigration_marriage_example.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0657/4240/files/64413435016.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/2331/6630/files/lldb_cheat_sheet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2909/3784/files/51307461154.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7311/7096/files/marathi_aarti_sangrah_file_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4746/0768/files/korewezezarumibif.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6285/2761/files/autumn_leaves_jazz_chords.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/taniseraguvifololesugom.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0528/8352/files/chopin_etude_8_sheet_music.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2047/6828/files/848997804.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_off000060c5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x60C5 | 5632 bytes |
SHA-256: 2272aee5de258cfa7b31048b42a8053d1dc6723b061e602d68dbf8e0f68b89e9 |
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font_01_sfnt_off000073d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73D1 | 10908 bytes |
SHA-256: f00eee76fcb7408e3daebf294644835df78ec2d24ad0fb3bbd894b8325330fd4 |
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