MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous links, identified by the PDF_SEO_LINK_FARM heuristic, designed to direct users to external websites. One of these links, ttraff.ru, is flagged as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'epidemiology of ascariasis pdf', likely to trick users into clicking the malicious links.
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.ru/pify?keyword=epidemiology+of+ascariasis+pdf In PDF document text
- http://files.equestrianeliteatapplejackfarm.com/uploads/1/3/0/7/130776433/folebusunaruwux.pdfIn PDF document text
- http://files.lgcryogenics.com/uploads/1/3/0/9/130969904/8c6092b.pdfIn PDF document text
- http://files.krista-israel.com/uploads/1/3/0/9/130969791/sapibekufasufop_zabugotumo.pdfIn PDF document text
- http://files.uciphideltaepsilon.org/uploads/1/3/1/4/131437873/soxomumowopu.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/1/0438/0252/5856/files/lefefitoxuxexagabumex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8830/5558/files/37519056897.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2178/6521/files/94966212926.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4468/4454/files/42301097939.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0351/8882/files/29060049742.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7387/2807/files/34659740471.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0892/5600/files/fixuzaweruratiduze.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1126/7990/files/dijagozasuz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3391/1705/files/68183904137.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8515/9845/files/64242606305.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8249/7701/files/jibanisevide.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7860/6229/files/roxasake.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9363/8811/files/45160840161.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_off0000be4b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE4B | 5136 bytes |
SHA-256: 470519d54e310d401f07f8150114bcc44b06edf1e7ae44bf1a32cb21d8f77be3 |
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font_01_sfnt_off0000cfcf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFCF | 10208 bytes |
SHA-256: 78eab232d10ff04c6a8f75d2fd256f20fe88457bac5bb29b5bd6e9b3a1dc5718 |
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