MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a significant number of embedded links, many pointing to Shopify domains, which is indicative of a link farm or SEO manipulation tactic. One URL, 'https://ttraff.ru/wix?keyword=chemical+names+and+formulas+worksheet', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body text is heavily garbled, but the presence of the malicious redirector URL and the link farm heuristic suggest a malicious intent, possibly to redirect users to phishing sites or malware downloads.
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.ru/wix?keyword=chemical+names+and+formulas+worksheet In 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/1/0437/2473/4613/files/kidevuziwogufemidu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/0369/6536/files/ctfa_exam_study_guide.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8648/7455/files/61829042317.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/3841/4760/files/carlos_alberto_montaner.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8212/8291/files/anki_android_version.pdfIn PDF document text
- https://static.usrfiles.com/ugd/d01287_fa204b09850c4259a68402a29249e77d.pdfIn PDF document text
- https://static.usrfiles.com/ugd/83f04e_4242ae6cb90c481a82ebaceecf55c12c.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3430/3912/files/12264932074.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2303/1720/files/88391567909.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9986/5756/files/mitavofisewewigiwa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0466/4301/9941/files/aladdin_2019_songs.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bapumonotirugapagemuzigin.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_088317ae5d824175bc32c3c19cc350cf.pdfIn PDF document text
- https://static.usrfiles.com/ugd/d1d005_f9311fb913894f26b67bedc130752904.pdfIn PDF document text
- https://static.usrfiles.com/ugd/2274a7_341ea12be5f8499c8060b7528c407a01.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_b1b6dd5e34a34c318935621fec93e880.pdfIn PDF document text
- https://static.usrfiles.com/ugd/15cd4d_92cd93bd2b8749fbaa56ae69ab918897.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_off00006853.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6853 | 5324 bytes |
SHA-256: 4320e57721e7fbe08660547b820e7aab02cbf6888228e0693f5c5eb86a59bffd |
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font_01_sfnt_off00007a4d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A4D | 13688 bytes |
SHA-256: 34742f10b76738bf449d56c9d998a6e15a0945d62e62ee83e771169c73cb9d20 |
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