MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external PDF files, many of which are hosted on what appears to be a link farm designed to mimic legitimate document repositories. The primary redirector URL, https://ttraff.com/pify?keyword=libro+el+cerebrito+pdf, is flagged as malicious and used in conjunction with an image lure, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to these URLs, reinforcing the attack pattern.
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.com/pify?keyword=libro+el+cerebrito+pdf In PDF document text
- http://files.specialtouchesgiftsforthehome.com/uploads/1/3/2/6/132681602/fumad_tilazenu.pdfIn PDF document text
- http://files.weinbergfirm.com/uploads/1/3/1/4/131483149/xusex.pdfIn PDF document text
- http://kunuze.franklindevelopmentcorporation.org/uploads/1/3/1/4/131408280/1274611.pdfIn PDF document text
- http://files.roselawvermont.com/uploads/1/3/1/4/131407227/170f1320375662.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/1/0433/4216/8218/files/approximation_for_bank_exam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2962/6013/files/20461915346.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/1976/9755/files/strago_lore_guide.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2990/5058/files/86789278161.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4430/7098/files/aoac_1990_volume_2.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7927/9527/files/moxulitijizupub.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2652/0987/files/63040067338.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4463/3750/files/azur_lane_wiki.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4275/9071/files/bojuvo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0314/0506/files/curious_incident_of_the_dog_in_the_nighttime_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0151/1068/files/810_735_3481.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_off00004396.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4396 | 4840 bytes |
SHA-256: 3c0936d32b2933d0d2a3855af93a0aa4a0f933b5fd367b555ce45fedc3377b47 |
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font_01_sfnt_off00005413.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5413 | 10124 bytes |
SHA-256: 0fdd4ad9c487d9ffbbc0d2b61f6cbe5d0819c2ef87a092d46d8e297a6e716b27 |
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