MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects through ttraff.cc, a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'exercises with answers pdf' and the malicious URL, suggesting a lure. The heuristic 'SE_MFA_LURE' indicates the document is designed to harvest credentials or MFA approvals. No scripts were extracted, but the primary attack vector appears to be the malicious redirector link.
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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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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MFA / one-time-code harvesting lure high SE_MFA_LUREDocument asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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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=causative+have+exercises+with+answers+pdf In PDF document text
- http://files.emilystillings.com/uploads/1/3/0/7/130775846/e9c31d6.pdfIn PDF document text
- http://files.ezservicelist.com/uploads/1/3/2/7/132741110/pefesepo_vatikuzaxojux_moxurabeluri.pdfIn PDF document text
- http://files.alexismahdavi.com/uploads/1/3/1/3/131380008/5d82e573.pdfIn PDF document text
- http://files.decadentaffairsco.com/uploads/1/3/1/4/131407492/20853.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/1/0440/4792/5413/files/bb_clarinet_finger_chart.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/1784/4382/files/fexarasozesigajogilugazo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2794/6904/files/xedidafu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7573/1616/files/kuxoxenunofotuvuri.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1559/4393/files/dinesh_biology_class_10_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6542/5570/files/dajawosarewumutumin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/2862/6080/files/jilojoditek.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80787326618.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6533/5208/files/5097215976.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6327/8758/files/urticaria_cronica_tratamento.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4681/4374/files/gafide.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5283/4711/files/26798356247.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4565/0586/files/12517453388.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5085/2762/files/kuluwozejozusobaxuz.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_off00006d81.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D81 | 5336 bytes |
SHA-256: 73e32a2a0c3ad9982e2c1ddc1ae704e6b949a8b1dbe0f1cea3e476a9486558a2 |
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font_01_sfnt_off00007fb5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7FB5 | 10532 bytes |
SHA-256: f8cc4cf412ccde0c416450e91ca5d4874575c0efd8cec84f8ac13f2cce636f55 |
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