MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.001 Malicious Link
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, directing users to `https://ttraff.cc/wb?keyword=past%20simple%20passive%20worksheet%20with%20answers`. Additionally, it exhibits characteristics of a PDF link farm, with numerous links pointing to external PDFs, many hosted on WordPress. The document body, though heavily obfuscated, appears to contain text related to a worksheet, suggesting a lure. The primary attack pattern involves tricking the user into clicking the malicious link.
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/wb?keyword=past%20simple%20passive%20worksheet%20with%20answers In PDF document text
- http://files.borobengals.com/uploads/1/3/1/0/131070173/dazozasejugufe-bupolinur.pdfIn PDF document text
- http://files.davidensleydesign.com/uploads/1/3/1/0/131069766/9174616.pdfIn PDF document text
- http://files.soleilalamoana.com/uploads/1/3/2/7/132741144/runijinanuviza-lenuteza-nimogolinatoxu-povasupinidud.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://mutemoxapeko.files.wordpress.com/2020/06/20468480495.pdfIn PDF document text
- https://pejeriniva.files.wordpress.com/2020/07/89555191856.pdfIn PDF document text
- https://volisavosak.files.wordpress.com/2020/07/71878100898.pdfIn PDF document text
- https://gajodutejek.files.wordpress.com/2020/06/bisobetavobamege.pdfIn PDF document text
- https://dofotim.files.wordpress.com/2020/06/guxolivosixexuletin.pdfIn PDF document text
- https://vowivol.files.wordpress.com/2020/07/xonatimesimuz.pdfIn PDF document text
- https://jorelada.files.wordpress.com/2020/06/lekopajupometexiz.pdfIn PDF document text
- https://relotudop.files.wordpress.com/2020/07/munegajel.pdfIn PDF document text
- https://weteritisomu.files.wordpress.com/2020/06/68949733017.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/4746/1788/files/37976766623.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5824/9376/files/90553974944.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5842/9089/files/wurawijamufiri.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kesazemoluvumexon.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0655/8359/files/53379429357.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/4293/9814/files/gazamujumixuraxigopeputu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4936/9252/files/92265200213.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_off00005bde.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5BDE | 5064 bytes |
SHA-256: 07578b817576d8289b78559e7bd8eadc16c3266c967df294edc5dfa3beaa1689 |
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font_01_sfnt_off00006cf0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6CF0 | 9720 bytes |
SHA-256: f447d3ca7339f99a97b9e973a5fd26435a866ebfc2204e2ebab5d665550d1445 |
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