MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, includes text related to "problem solving worksheets pdf" and the wkhtmltopdf tool, suggesting a lure to disguise the malicious intent. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to attract traffic and potentially improve search engine ranking for the malicious content.
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=problem+solving+worksheets+pdf In PDF document text
- http://files.saraandreahoffman.com/uploads/1/3/1/6/131606968/wuzul_jugigusiz.pdfIn PDF document text
- http://wisiwako.countyclassdestroyersassociation.org/uploads/1/3/1/4/131407164/9753617.pdfIn PDF document text
- http://files.sunshineboattours.com/uploads/1/3/0/7/130739864/4dd9e16b50c19d9.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/1/0430/8844/5591/files/10719016464.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98029452840.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0176/6310/files/seludereregidananu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3594/1274/files/fedimosinofizino.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5530/0249/files/45395288581.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6263/2346/files/norubavusazuvavu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8250/4600/files/latasovuliga.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8914/1664/files/psychology_books_in_telugu_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7211/9199/files/45084927698.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2378/5370/files/big_yellow_taxi_chords.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1455/3763/files/30461031812.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5209/0022/files/7_days_to_die_nitrate_powder.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_off00007871.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7871 | 5388 bytes |
SHA-256: d1db20537355b666b97bc3fe82a9154ee2a576899786c9c79972781f00daf01a |
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font_01_sfnt_off00008aa0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8AA0 | 10080 bytes |
SHA-256: 2bd7f2561ca48d49ae04a358473dcedfade12f4043a87108c4996cbbb8a79ace |
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font_02_sfnt_off0000ad1c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAD1C | 4324 bytes |
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
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