MALICIOUS
234
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.cc'. The document body, though heavily obfuscated, contains a string that appears to be the same URL, presented as 'coding interview questions pdf'. This indicates a social engineering attempt to trick the user into clicking the malicious link. The PDF also contains a large number of external links, many hosted on shopify.com, which is flagged as a link farm.
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=coding+interview+questions+pdf In PDF document text
- http://files.multidimensionalchromatography.com/uploads/1/3/1/1/131163955/kuxelifaxevuji_rutudobiso_vigidazik.pdfIn PDF document text
- http://files.qstreetband.com/uploads/1/3/0/9/130969080/jakusafi.pdfIn PDF document text
- http://files.godbeyfarms.com/uploads/1/3/2/6/132695455/kiturado-mabuvimos.pdfIn PDF document text
- http://files.sjdictionarysources.org/uploads/1/3/0/8/130873983/ninarapoxasap-lopeninefo-pawapiwujo.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/1/0431/2668/5850/files/microscopio_optico.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7813/2636/files/79458029029.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8148/2919/files/13888515290.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7673/0533/files/bilawesasonuzupapoz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0449/3754/3848/files/c_how_to_program_6th_edition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5249/9095/files/11450127529.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0396/0731/files/devi_bhagavatam_story_in_telugu_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1767/4656/files/rewezimafijemagalepap.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3184/5271/files/microsoft_ntp_server.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0268/2789/files/52341466866.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0447/1003/5609/files/allah_ke_99_naam_ki_fazilat.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1266/1152/files/lewuwumexoxaxozigedoni.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4807/4405/files/fogexumetowuwapazad.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_off000073ca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73CA | 5152 bytes |
SHA-256: 15aa5b5272ab7830aa4bb90b2a43258bfec825761981f988e2955aeaba3becde |
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font_01_sfnt_off0000856f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x856F | 10240 bytes |
SHA-256: f730217da69969d6cdba1af410559d7ade7ba7a681f9bb46e59658f835fdc3a1 |
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