MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text referencing a 'scantron answer sheet' and includes the malicious URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to obscure the ultimate destination. The ML classifier also strongly indicated maliciousness.
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.com/pify?keyword=sample+scantron+answer+sheet+for+let+pdf In PDF document text
- http://riwemu.celinehavard.com/uploads/1/3/0/8/130814011/1095579.pdfIn PDF document text
- http://files.oskargudmundsson.is/uploads/1/3/0/7/130775346/dibunomugan.pdfIn PDF document text
- http://files.nalg.org/uploads/1/3/0/8/130873872/1247346.pdfIn PDF document text
- http://files.deliveredvessels.org/uploads/1/3/1/4/131438460/2ed05f.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0428/9314/8313/files/best_place_to_play_spades_online.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tutokufumetuja.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6657/2452/files/tisunutevavuguxakizapofil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3100392900.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2753/7828/files/paxegapukuwupesazatuvena.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7772/9432/files/gipasezevobewizegud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3239/6447/files/47015031367.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9377/8837/files/t_m_apostol_calculus.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7529/5640/files/708_296_4502.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9244/2277/files/15435495271.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46496449222.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/3508/0342/files/bivupa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4680/5408/files/hot_wire_anemometer_sensor.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0134/0319/files/498864328.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9972/4703/files/36453475618.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000064e4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x64E4 | 5332 bytes |
SHA-256: ffddbb39595a7817ff91a49e96c776a10073ecaab74907708b60f3b15d12cbfc |
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font_01_sfnt_off000076d7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x76D7 | 10772 bytes |
SHA-256: 55cce65a043e1740a6bd52ad3ee5735bc55d2d1fa4b63b86bfc8da2f9d566b96 |
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font_02_sfnt_off00009b65.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9B65 | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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