PDF malware analysis — malicious · 426baa085ff9d947

MALICIOUS

PDF

55.7 KB Created: 2020-08-31 20:47:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ce6595800bb36a3a6b059f3317fe7792 SHA-1: 58a6d8d0336688f698edd2b0fe153e4df9ddff66 SHA-256: 426baa085ff9d9471f487317763f7a547533f9621001d63a867022c0d3b49068

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a link to a known malicious redirector infrastructure, ttraff.com, which is disguised as a movie song download. The ML classifier strongly indicates maliciousness, and the PDF structure includes a large number of external links, suggesting a link farm or SEO poisoning attempt. No scripts were extracted, but the primary attack vector is the malicious URL.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF 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.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small 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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The 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.
Embedded URL info EMBEDDED_URL

One 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.com/wix?keyword=baazigar+movie+songs+free++320kbps
- https://cdn.shopify.com/s/files/1/0431/2875/0234/files/53948256955.pdf
- https://cdn.shopify.com/s/files/1/0429/8460/3801/files/56900305689.pdf
- https://cdn.shopify.com/s/files/1/0431/0053/6986/files/71023408754.pdf
- https://cdn.shopify.com/s/files/1/0437/5229/2513/files/list_of_botanical_names_of_plants_and_animals.pdf
- https://static.usrfiles.com/ugd/6290de_7e607a8f08cb466d8d84c32d2fefa338.pdf
- https://static.usrfiles.com/ugd/d162e3_7514d2e0ecac412ca384f588aff02145.pdf
- https://static.usrfiles.com/ugd/455f95_a35e30af02414a2baa72e0b4f3f71ca9.pdf
- https://static.usrfiles.com/ugd/289c5e_f894dd026d65434db652c8988c9824f4.pdf
- https://static.usrfiles.com/ugd/097bd5_693ca9a662ae464d8f5fe369dec9799c.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdf
- https://cdn.shopify.com/s/files/1/0433/3551/6318/files/63230550359.pdf
- https://cdn.shopify.com/s/files/1/0434/5308/7901/files/5_factors_of_effective_communication.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/
- https://static.usrfiles.com/ugd/097bd5_693ca

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000090c6.bin` `8830c54a696a504dacc3b9d5a0469a9bda59b01dcc9eb878ac5ff8ec5964493f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x90C6	5992 bytes
`font_01_sfnt_off0000a52a.bin` `5573c10709663394f40029f84db7b6e17cf08c1ec4d763cd72637ef05c44e66e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA52A	14544 bytes

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