MALICIOUS
242
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file contains numerous links to a redirector service, which in turn points to a malicious URL. The document body, though heavily obfuscated, contains text that appears to be a lure for downloading grammar books, combined with a call-to-action phrase. The presence of a malicious redirector and the lure suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.
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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Remote-support tool lure high SE_REMOTE_SUPPORT_LUREDocument instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=german+grammar+books+for+beginners+pdf In PDF document text
- http://files.fineartssociety.net/uploads/1/3/1/6/131636819/loxulufox-bukinib-fijew.pdfIn PDF document text
- http://files.gilchristwhatnot.com/uploads/1/3/0/9/130969545/c76008.pdfIn PDF document text
- http://files.laviishluxxe.com/uploads/1/3/0/7/130775942/1a41a3f.pdfIn PDF document text
- http://files.railwayterraceselfcatering.com/uploads/1/3/0/8/130873893/fuxisunijikezupenozi.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/1/0427/4028/5607/files/23144816445.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5458/0391/files/50961486509.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4035/9068/files/pawejatogiw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1775/7095/files/fancy_nancy_coloring_pages.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2571/8678/files/runuterodexojelikavevigeb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5942/0063/files/90248582030.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4975/3507/files/veroxefobodeludisatubaxu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3549/2503/files/95369174348.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3019/9966/files/wivimogofuxagid.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8266/1526/files/gebozagavezevanafe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8022/9791/files/54548121883.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5285/9543/files/xoliz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7097/9237/files/pdf_file_kaise_banayenge.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3084/6363/files/72697466474.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1219/4463/files/getujetuvazatabesez.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_off0000743d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x743D | 5564 bytes |
SHA-256: 3374d5fe3dff52eddfd06e1c9ec99cb890a5d8ee713349cf1d4bdd8a4db15c01 |
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font_01_sfnt_off0000870e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x870E | 10508 bytes |
SHA-256: 7c61e9401eee2bd73bd700bc7d7b98f7c72e55b72650bcf382f2113f1365fee4 |
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