MALICIOUS
214
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.001 Malicious Link
T1059.001 PowerShell
The PDF file contains numerous links to external PDF files, a common tactic for SEO poisoning or redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector. Additionally, the document body, though partially corrupted, suggests a lure related to a 'Dell r840 datasheet pdf', which is likely a pretext to encourage users to click the embedded malicious links. No scripts were extracted from this sample.
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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
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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=dell%20r840%20datasheet%20pdf In PDF document text
- http://files.ornamentsofexpression.com/uploads/1/3/1/4/131455883/vojosa.pdfIn PDF document text
- http://files.sechodb.com/uploads/1/3/0/8/130814754/8200698.pdfIn PDF document text
- http://files.tomshultz.net/uploads/1/3/0/7/130775846/fd92088d0.pdfIn PDF document text
- http://files.isoandbusinessexpert.com/uploads/1/3/0/8/130813797/noxodak.pdfIn PDF document text
- http://files.summerbeez.com/uploads/1/3/0/7/130775138/jososoxukifij-mofalirevijubum.pdfIn PDF document text
- http://files.southcoastwarriors.com/uploads/1/3/1/3/131398093/zuzuj.pdfIn PDF document text
- http://files.midwestjuniorpreviewshow.com/uploads/1/3/0/8/130874307/desuvevatebakogelu.pdfIn PDF document text
- http://files.taylor-poleskey.net/uploads/1/3/1/3/131383269/9010978.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://jokurana.files.wordpress.com/2020/07/46497960386.pdfIn PDF document text
- https://nesolurifan.files.wordpress.com/2020/06/8407978435.pdfIn PDF document text
- https://kedisufod.files.wordpress.com/2020/06/77282134720.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8584587797.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fezusagofetivori.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70354855800.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61047377128.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21244882445.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_off00009a8b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9A8B | 3548 bytes |
SHA-256: be906056ba05e85b660b3738118aab57ce696a985c9ff20ea3020fcd9c870825 |
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font_01_sfnt_off0000a740.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA740 | 5076 bytes |
SHA-256: a50a8c3c2c62a88d9cf5ddab6893901620e33f5987b45b1ff8d91fdfb49d1406 |
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font_02_sfnt_off0000b898.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB898 | 12656 bytes |
SHA-256: 3f8f999300a460e063389b11b5955f72c5d87864360f387dbd4daf7d179a0a4e |
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