MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.001 Malicious Link
The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, suggests a lure related to a 'building construction book'. The presence of urgency language further supports a phishing or social engineering attack. The primary IOC is the malicious redirector URL.
Machine Learning
- Nyx PDF Classifier malicious score 0.8989
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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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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=building%20construction%20book%20by%20barry%20pdf In PDF document text
- http://files.maidtoshineservices.net/uploads/1/3/1/4/131437268/29f33e.pdfIn PDF document text
- http://files.rajahmaples.com/uploads/1/3/1/6/131637658/lizoguf.pdfIn PDF document text
- http://files.mylakehillsreserve.com/uploads/1/3/1/8/131856052/9784b.pdfIn PDF document text
- http://files.rvhh.com/uploads/1/3/1/0/131070062/vebipuwujewisut-tulobevavozopim.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/1/0428/9835/8432/files/53607129813.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6280/4136/files/tifunuzaxos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4489/6925/files/zudenefesijerumivez.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8451/3440/files/gesegojowarapitin.pdfIn PDF document text
- https://sigigokureti.files.wordpress.com/2020/06/54953795168.pdfIn PDF document text
- https://luxotamataxo.files.wordpress.com/2020/07/rawuwomuv.pdfIn PDF document text
- https://fesajaj.files.wordpress.com/2020/07/daridafuxijorafa.pdfIn PDF document text
- https://julabifefo633366968.files.wordpress.com/2020/06/27095096649.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6372/1637/files/demajeseta.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9154/2681/files/daduwozurenunuke.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/razikeruranofe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3034/7938/files/nuwemipowagegupisaligati.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6554/8705/files/xuloxuzozuxu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7240/6179/files/vasuvonowarefaditolage.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sutapazuvonovojikujabera.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8090/8951/files/vemamavonepawuzegufotutaj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0026/5878/files/webiketusuzosasaverig.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_off000cb3c2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB3C2 | 5444 bytes |
SHA-256: 03492dbc4e1ed1053e143a3b86d0e90d8aa2671884b386a7f91cd6c6b9bb6d1a |
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font_01_sfnt_off000cc656.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC656 | 10652 bytes |
SHA-256: 4428e4a4c0cfbc300924a4b1301dc566cf4cf22a32eb2b0a6685555523eb0445 |
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