MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged as malicious by an ML classifier and contains a significant number of embedded links. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=pathogenesis+of+inflammatory+bowel+disease+pdf'. Another heuristic indicates a PDF link farm, with 'https://cdn.shopify.com/s/files/1/0431/4618/2822/files/moscow_moscow_lyrics_english.pdf' being one of the initial URLs. The document body, though heavily obfuscated, also contains the malicious redirector URL.
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=pathogenesis+of+inflammatory+bowel+disease+pdf In PDF document text
- http://files.vitamassage.com.au/uploads/1/3/1/4/131438330/rirasigefofota-bimanudotili-fuxifidi-vuluzotetesuluw.pdfIn PDF document text
- http://files.randomtraveler.net/uploads/1/3/1/3/131384573/fuwelufu.pdfIn PDF document text
- http://vawigu.k9lane.com/uploads/1/3/0/9/130969754/pixiveboli-nezufef-bujisubuxog.pdfIn PDF document text
- http://files.portageresourceguide.com/uploads/1/3/1/6/131606644/8719065.pdfIn PDF document text
- http://jobuj.win19.org/uploads/1/3/1/4/131453698/muxopinimijal_pikubobotaviz_reritifajegufif_voretamafukija.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/1/0431/4618/2822/files/moscow_moscow_lyrics_english.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3771/0744/files/14000835870.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1560/1304/files/88131955128.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6633/6167/files/lonewuk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5331/8298/files/59428762857.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5649/5783/files/jafokogevikivefobalutivuf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7711/5810/files/ziwegoximepeni.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0324/7781/files/6501179664.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/8622/3262/files/33690406468.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3796/5986/files/fozexorawelifo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0331/3315/files/wemomizuvofizex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8099/1388/files/tudiluzuvuxituzojikuze.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_off00009902.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9902 | 5788 bytes |
SHA-256: ed0d68fe974e33478659f2f054389044c477865a11136123cebdbcc77f057f80 |
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font_01_sfnt_off0000aca5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xACA5 | 10888 bytes |
SHA-256: a7eed7bb7b0392a1ee78a92106444b3acb142cd7454e58453e3f0f023187e7a3 |
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