MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at https://ttraff.ru/pify?keyword=ohsaa+physical+form+2016-+17. The document body, though malformed, contains text suggesting it is a physical form, likely a lure. The ML classifier strongly supports the malicious verdict. The primary attack pattern involves redirecting the user to malicious infrastructure.
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/pify?keyword=ohsaa+physical+form+2016-+17 In PDF document text
- http://files.bloomintl.org/uploads/1/3/0/9/130969652/84490a6c73.pdfIn PDF document text
- http://files.labrottiecreations.com/uploads/1/3/1/4/131454505/3759211.pdfIn PDF document text
- http://files.struggleformodernturkey.com/uploads/1/3/1/4/131437593/meridedawaxubo-nukad-nosijoxubowi-muvigokemarowok.pdfIn PDF document text
- http://files.liftinggearhampshire.com/uploads/1/3/1/4/131408172/0a186931f94820.pdfIn PDF document text
- http://files.ltfdelmarq.com/uploads/1/3/2/6/132682171/fusugojaruzaseg.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/1/0434/5928/1061/files/xatawasej.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9336/7710/files/39167843393.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8956/7650/files/24871365047.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2223/8374/files/10492272009.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5463/6966/files/vufaraf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57790570823.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4130/8319/files/47688376616.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5346/6271/files/kubokalin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6734/1981/files/zoniwavelofeb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6337/8081/files/word_limit_for_common_app_essay.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4638/8380/files/muvaraketumimokowapafu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76640573288.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8737/1171/files/68972065659.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0994/9341/files/76893542121.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_off00004ce5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4CE5 | 5976 bytes |
SHA-256: b47d523bab2a26ff8f2160bbeebbc400c99115861de6f17a9e23adc1253c4196 |
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font_01_sfnt_off0000612a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x612A | 9636 bytes |
SHA-256: 13ee49c1efa357cc531e232c7f7b0576841f4876ece74aba4409d18fea15e853 |
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