MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes text suggesting a lure to 'download pdf file for android' and references wkhtmltopdf, indicating a potential attempt to disguise malicious content. The presence of numerous external links, many pointing to Shopify domains, suggests a link farm or redirection strategy. The primary malicious IOC is the ttraff.ru redirector URL.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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=baixar+arquivo+pdf+para+android
- http://files.bingsdsm.com/uploads/1/3/2/7/132710683/javegaxawetedix_gipamadir.pdf
- http://files.shopdogtown360.com/uploads/1/3/2/6/132681698/lutitunolepixu_zuzofi.pdf
- http://files.gclx.org/uploads/1/3/0/7/130739654/4457687.pdf
- http://files.heatherseagraves.com/uploads/1/3/2/3/132302774/nufigidoruz-reverime-mojavo.pdf
- https://cdn.shopify.com/s/files/1/0429/4639/6326/files/accidente_cerebrovascular_cerebeloso.pdf
- https://cdn.shopify.com/s/files/1/0427/9923/5228/files/depanufopaxidimelogojojo.pdf
- https://cdn.shopify.com/s/files/1/0429/3863/0300/files/99555255133.pdf
- https://cdn.shopify.com/s/files/1/0430/4093/1991/files/jugifupozigumoluzi.pdf
- https://cdn.shopify.com/s/files/1/0427/5663/6828/files/61319422617.pdf
- https://cdn.shopify.com/s/files/1/0429/7441/2949/files/torivigamobunoli.pdf
- https://cdn.shopify.com/s/files/1/0436/8682/2053/files/duderogewi.pdf
- https://cdn.shopify.com/s/files/1/0428/2672/7580/files/81145545315.pdf
- https://cdn.shopify.com/s/files/1/0431/5080/3099/files/muxaguwam.pdf
- https://cdn.shopify.com/s/files/1/0434/5289/1298/files/gasudepipuxa.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_006_off0000a27f.bina10dc2187cfbf7805e92f7db8b3920e5ed491820acebd253f8899eb6e493f349 |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0xA27F | 20160 bytes |
font_00_sfnt_off00006d51.bin19f413536ecc4bad0b0949e9b8e7bb9ab4552cb0aed1d97aa87c27d5819c16b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D51 | 5128 bytes |
font_01_sfnt_off00007ee0.binceb285fdb18e8be37eb72a909601465348989555d3367c6b4a2d3ad13f28548c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7EE0 | 10328 bytes |
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