MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The document body text, though partially corrupted, suggests a lure related to '4 hour drug and alcohol course answers'. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy. The ML classifier strongly flagged this PDF as malicious.
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.cc/pify?keyword=4+hour+drug+and+alcohol+course+answers In PDF document text
- http://tuxosef.stresscafe.com.au/uploads/1/3/1/4/131407005/xodubu.pdfIn PDF document text
- http://files.addressphonelist.com/uploads/1/3/0/8/130813427/riferejip_viluzopebazofad_bepuxoxa_dakavozedeza.pdfIn PDF document text
- http://repire.phonecharmed.com/uploads/1/3/1/4/131438869/kofudugalom.pdfIn PDF document text
- http://files.motionfuels-arkansas.com/uploads/1/3/0/7/130738566/guxofijut_duzil_biguwonukijux.pdfIn PDF document text
- http://tixikoju.fengchange.com/uploads/1/3/0/8/130873995/tepibusulodatip_xiduj_zimodojafakafix.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/1/0455/3559/2613/files/mufadidixo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3253/4440/files/ludavofanozerej.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7139/6257/files/kopulore.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/2386/5768/files/character_study_of_daniel.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0521/3847/files/annenmaykantereit_barfu_am_klavier.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8436/5476/files/suwurejubefufofur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4555/1271/files/sasezuwivedelon.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0447/5568/1431/files/bsc_1st_year_syllabus_physics_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6222/2232/files/bowokidutinejoroxefo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6127/9896/files/jovapiku.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9050/9977/files/basagusu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3484/4059/files/duxipanezafijimafirerugo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0449/0277/6999/files/visio_timeline_template_free.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_off00008440.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8440 | 5284 bytes |
SHA-256: 471c00743969d79cf841734bbab96d7c64334a7cac25aa3e345d6a4d8bc1be20 |
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font_01_sfnt_off00009647.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9647 | 10704 bytes |
SHA-256: 09e64c32cd49ea338f24df398b70fe3da3932d8658b532bd058535a6d00ce826 |
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