MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a link to a known malicious redirector, disguised as a "Hammerhead screwdriver manual". The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and the ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the lure text and the malicious URL. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF documents, likely to improve search engine ranking for malicious content.
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.link/wix?keyword=hammerhead+screwdriver+manual In PDF document text
- http://files.ogestem.com/uploads/1/3/2/6/132696483/gelidulovekim.pdfIn PDF document text
- http://nogopalal.cliftonclimateaction.org/uploads/1/3/1/8/131857363/gidukob-pekal-jagebom-fetib.pdfIn PDF document text
- http://zelupase.tiagarrawalk.com/uploads/1/3/1/3/131379069/ripebugibup.pdfIn PDF document text
- http://files.thejadebeagle.com/uploads/1/3/1/4/131453028/36b96181282222a.pdfIn PDF document text
- http://bapoga.highgradeglobal.com/uploads/1/3/0/7/130738666/lisumokezeduv-binin.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://static.usrfiles.com/ugd/041b56_ef3472cb42124f5a81313ca0ae8660a7.pdfIn PDF document text
- https://static.usrfiles.com/ugd/16879a_47f88c6be64b4702945d7e08f3de4246.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b0b521_aabcb996a56d489b8324e1543299ec05.pdfIn PDF document text
- https://static.usrfiles.com/ugd/85c99c_df12e212528b4b21a33936d04e633c34.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5018/0514/files/lefubevimipu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3428/0090/files/puniro.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2318/7614/files/polaxakojika.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6318/0438/files/podosoguvifu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0577/1939/files/disazexudaborubazeg.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9212/2527/files/balsamiq_mockups_free_for_windows_7.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4681/3346/files/68738637077.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7218161301.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7904/9121/files/47257068755.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_off00006c1a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6C1A | 5292 bytes |
SHA-256: 21c71f9421e5a0f32609d88808f66a034a1165d77d6a24e59b40272b11c05c72 |
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font_01_sfnt_off00007e00.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7E00 | 10680 bytes |
SHA-256: 5aa3a5ee7dbf46d5dfd8f76426bb4181206b81390662741054af31e8409af3b3 |
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