MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. The primary link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to academic topics, likely serving as a lure to disguise the malicious intent of the embedded links. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a link farm designed to redirect users to potentially harmful content.
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/wb?keyword=division%20of%20labor%20in%20society%20durkheim%20pdf In PDF document text
- http://files.villavidalocamarket.com/uploads/1/3/1/4/131438682/mejobona_pepurumiferezo.pdfIn PDF document text
- http://files.thirdcinemaproductions.com/uploads/1/3/1/3/131379749/sonazez.pdfIn PDF document text
- http://files.paintedbuttonquail.com/uploads/1/3/1/0/131070045/nazurigobavul.pdfIn PDF document text
- http://files.littlebitofheavenadoptionreferral.com/uploads/1/3/1/4/131407292/73b36.pdfIn PDF document text
- http://files.completeserviceokc.com/uploads/1/3/2/7/132740501/xebejitepipin.pdfIn PDF document text
- http://files.candycoatedcircus.com/uploads/1/3/2/6/132695668/tamanusupes.pdfIn PDF document text
- http://files.whitepeacockcoffee.com/uploads/1/3/1/4/131436971/7dad80.pdfIn PDF document text
- http://files.milanibowhunting.com/uploads/1/3/1/8/131855992/b16a699.pdfIn PDF document text
- http://files.daydreamandwonder.com/uploads/1/3/1/3/131380850/e45e13e.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://wajosub.files.wordpress.com/2020/07/96562405670.pdfIn PDF document text
- https://nefirizawira.files.wordpress.com/2020/06/latowigirexelibo.pdfIn PDF document text
- https://puzotineper.files.wordpress.com/2020/07/pilinesijujamesakuvo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30899714004.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5698/8317/files/zipefukaguzilezebabemes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59022585862.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2226/2178/files/lovaxepos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42386580717.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/4801/8855/files/wiladewokex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2888/1313/files/48916301013.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_off00006010.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6010 | 5640 bytes |
SHA-256: 4ce4ef868d0a5551f2d790fc4c1c31ec616afaf0813c6593331c6b14dc28f296 |
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font_01_sfnt_off00007314.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7314 | 9904 bytes |
SHA-256: 12df46c2156f53b70325fc0ba9ef19e9acf78c2c52721735821b1893bca77281 |
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