MALICIOUS
222
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Cidco home online form 2018' and includes the malicious URL, suggesting a lure for users to click on the link. The presence of numerous external PDF links also indicates a link farm strategy, likely to improve search engine ranking for malicious content. The heuristic 'SE_INVOICE_LURE' further supports the phishing pretext.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 7
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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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.ru/pify?keyword=cidco+home+online+form+2018 In PDF document text
- http://files.toddurban.com/uploads/1/3/0/7/130775707/5707606.pdfIn PDF document text
- http://files.gameboydrew.com/uploads/1/3/1/6/131637562/3512568.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8104/0033/files/thani_oruvan_movie_downloads.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7361/0663/files/gifuxaloli.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9232/8102/files/all_color_rose_image.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0913/8084/files/nemonejomenevogikasupogod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3048/5912/files/46249556517.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/6933/9808/files/18550364404.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9670/2104/files/1785775645.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6310/6968/files/dowufekigufikegazetos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8095/8617/files/7203153346.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0446/6517/6217/files/58756353205.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/1758/2230/files/zinalema.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3495/8229/files/apollo_100_joy_sheet_music.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8448/8607/files/doterra_bergamot.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_off00007619.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7619 | 5300 bytes |
SHA-256: b89dbf2b240040028a665dbcbbfbbaf846700d7d811ad688df6f4b9b5e31eda4 |
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font_01_sfnt_off000087fc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x87FC | 13472 bytes |
SHA-256: 89d00a442eec7c7896488b9ea0d0c6df412bd561c2be670c3d9af83eab4cdbce |
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