MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, forming a link farm. One of these links, 'https://ttraff.ru/pify?keyword=bruchrechnung+%25C3%25BCbung+pdf', is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body itself is heavily obfuscated and appears to be a lure for the malicious links.
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=bruchrechnung+%25C3%25BCbung+pdf
- http://files.byzantineegypt.org/uploads/1/3/1/6/131636728/rodewed-tivuzi-mulusoxawuvi.pdf
- http://files.favershamyouthcouncil.org/uploads/1/3/0/7/130739084/gelinozevune-goluki.pdf
- http://files.cooper-lab.org/uploads/1/3/1/0/131070207/7720150.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jewepogepavab.pdf
- https://cdn.shopify.com/s/files/1/0434/4931/9577/files/bombay_blood_group_download.pdf
- https://cdn.shopify.com/s/files/1/0433/5907/6510/files/rulasegedosufem.pdf
- https://cdn.shopify.com/s/files/1/0437/4790/1592/files/72604602975.pdf
- https://cdn.shopify.com/s/files/1/0430/6301/7629/files/66270621725.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71895612735.pdf
- https://cdn.shopify.com/s/files/1/0427/8845/4559/files/6766791456.pdf
- https://cdn.shopify.com/s/files/1/0432/2328/5928/files/susotuwetamixom.pdf
- https://cdn.shopify.com/s/files/1/0433/8221/0725/files/mesonizigu.pdf
- https://cdn.shopify.com/s/files/1/0433/6150/1336/files/postal_exam_473.pdf
- https://cdn.shopify.com/s/files/1/0435/4244/6231/files/rugetisaravadixufirezab.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 |
|---|---|---|---|
font_00_sfnt_off00005ded.bin587e7517002de47c87c4debcabc106f3678ff492a0372903387d528171af1b1c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5DED | 5304 bytes |
font_01_sfnt_off00006fba.bin72ecd48b2c207ad877338530757962faf511feb8c2e6c5c3925e26d203d096e3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6FBA | 11132 bytes |
font_02_sfnt_off0000947c.binf7f944af48a1f29a4fc81369acbb7667dc0c0bb312d09d0e658341ed730dbf86 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x947C | 16144 bytes |
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