MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, appears to be related to tax deductions, suggesting a phishing lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content or improve SEO for malicious sites. The primary IOC is the redirector URL, which is likely used to funnel victims to a secondary malicious payload.
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/wb?keyword=deductions%20for%20ay%202019-20%20pdf In PDF document text
- http://files.clarediane.com/uploads/1/3/1/8/131858044/pewije.pdfIn PDF document text
- http://files.faniehose.com/uploads/1/3/1/4/131407138/fisogebedo-zupefivexexo-fifemevi.pdfIn PDF document text
- http://files.cummingchurchofchrist.org/uploads/1/3/2/6/132681464/6ff4e.pdfIn PDF document text
- http://files.trilliantrillian.com/uploads/1/3/1/1/131164317/kobejajaxojoxunilito.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/1/0428/2476/1507/files/46444283806.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2182/0319/files/35538148559.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1988/7001/files/dunafogeke.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/1024/3230/files/vafugokaxonefiluropolewos.pdfIn PDF document text
- https://vixifujeva.files.wordpress.com/2020/07/bugepidi.pdfIn PDF document text
- https://fojosazekew622645149.files.wordpress.com/2020/07/64152578797.pdfIn PDF document text
- https://mivoxuvedab.files.wordpress.com/2020/06/bunemawusexizozawe.pdfIn PDF document text
- https://filelexasebu.files.wordpress.com/2020/06/24080246111.pdfIn PDF document text
- https://lanijisivob.files.wordpress.com/2020/07/joremenexabutefag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7624/7967/files/30757069255.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2385/9873/files/vulopumuwotumubuxosibi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1760/0156/files/97324313253.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22650439267.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9894/8255/files/kofaj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2729/1542/files/kogode.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/meragavafeduxilaxopuxaw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7839/3749/files/77850272427.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_off00009694.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9694 | 5616 bytes |
SHA-256: cacf9130217cf5d91f98f4e71986f9d639bfe8a1ebf4e6b0307d9e4467b49751 |
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font_01_sfnt_off0000a9bf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA9BF | 10116 bytes |
SHA-256: dc8797b803adaf2d95cabbeaf3e2a03913c3e3b52fd980d717968de14c10fa22 |
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