MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains numerous links, including a primary redirector URL, that are part of an SEO link farm designed to lure users into downloading potentially malicious files. The document body text and embedded URLs suggest a phishing attempt disguised as a free download for an "apk" file. The ML classifier strongly supports the malicious verdict.
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.cc/wix?keyword=bilyoner+apk+indir+2019 In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0434/3054/3512/files/81920590724.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0105/2323/files/39624498832.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1720/6946/files/real_bluetooth_hacker_for_android.pdfIn PDF document text
- https://static.usrfiles.com/ugd/3aca14_2f14eddbd34e47b0afbd7069101298ea.pdfIn PDF document text
- https://static.usrfiles.com/ugd/e5a943_54ac23e6c9fc4e2984472a30d05c03f1.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_a2f540c36f1c48febaffc0d2ab13633a.pdfIn PDF document text
- https://static.usrfiles.com/ugd/19103d_926d0242886e43c1a09b507f0dc2a950.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6627/8556/files/33258690288.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0505/0008/files/34392574742.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0462/5301/5189/files/83472305799.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0451/1835/7669/files/algebra_definition_and_examples.pdfIn PDF document text
- https://static.usrfiles.com/ugd/8b49c6_794c874e3dd74f19a8a5590d0c9f1193.pdfIn PDF document text
- https://static.usrfiles.com/ugd/74c34a_0526e56e6a824a499e6655ee79925bc2.pdfIn PDF document text
- https://static.usrfiles.com/ugd/67e251_e515b97909a048de94a506a9ba0626c7.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000066bf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x66BF | 5180 bytes |
SHA-256: 3121557a217a2589214ab1fc9eef26f115fbbda70d3503c849ae1bda20f249d2 |
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font_01_sfnt_off0000785f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x785F | 11828 bytes |
SHA-256: d0d3c45599f377bb601c32460f2a827cd75e1255464061765f67d8d1d8593b15 |
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font_02_sfnt_off00009d4d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9D4D | 16160 bytes |
SHA-256: 53c3ec829963ec5a0af1bff4be2d724acb9959b277e5253d769434e6be684fe1 |
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font_03_sfnt_off0000b256.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB256 | 4324 bytes |
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
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