MALICIOUS
194
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 benign-looking WordPress PDF files, but one critical link directs to a known malicious redirector at ttraff.com. This suggests a link farm or SEO poisoning tactic to lure victims. The document body, though heavily obfuscated, contains text related to educational worksheets, which is likely a lure to disguise the malicious intent. No scripts were extracted, but the presence of the malicious redirector is a strong indicator of a phishing or malware delivery attempt.
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/wb?keyword=area%20of%20triangles%20and%20quadrilaterals%20worksheet%20tes In PDF document text
- http://files.commoditieslawyers.com/uploads/1/3/1/1/131163747/1118161.pdfIn PDF document text
- http://files.srrlsf.com/uploads/1/3/1/8/131871499/1149571.pdfIn PDF document text
- http://files.bearlakeregionalcommission.org/uploads/1/3/0/7/130740180/takamobiju.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://zokuwin.files.wordpress.com/2020/06/82220940963.pdfIn PDF document text
- https://roberodefon.files.wordpress.com/2020/07/sararufakowep.pdfIn PDF document text
- https://notavudaja.files.wordpress.com/2020/06/wawezugupokukawowogidi.pdfIn PDF document text
- https://boraburegoda.files.wordpress.com/2020/07/tezematimojeg.pdfIn PDF document text
- https://naxopovo.files.wordpress.com/2020/06/xatitaxiza.pdfIn PDF document text
- https://bavorekivaso.files.wordpress.com/2020/07/89282832607.pdfIn PDF document text
- https://nutumomox.files.wordpress.com/2020/06/zodebutaruxavuk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kenawuvotijogajutimev.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56966684837.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1557/7504/files/pijuwujifimeni.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1868/9432/files/5836507919.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1604/5222/files/gemumanazetulaxeruv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6422/2101/files/92083332601.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8992/9116/files/91494134046.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7259/3832/files/liwobexafula.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_off00005787.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5787 | 5324 bytes |
SHA-256: b926b71a0e614ba714d88514f895eef2281a128bb54151b5280a0ad1aa57c0f2 |
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font_01_sfnt_off0000699a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x699A | 9884 bytes |
SHA-256: 0429c59d849d27cc60bdf5b544b9a4c235eed1728c10bb4e459d5047fc36f36a |
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