PDF malware analysis — malicious · 1a1fc895a6c0a930

MALICIOUS

PDF

82.9 KB Created: 2021-05-24 19:51:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: 1f98efdf2724738f1bae4515501f4970 SHA-1: 9dd3e8b44db5de739fc867c94cf61e8cbe784ed7 SHA-256: 1a1fc895a6c0a9303fa53947e0f444e7f788a05beb8c4f0a9753eac29ebccdd8

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links, identified as a PDF SEO link farm. One of the primary external URIs points to 'https://golowaki.ru/strik?utm_term=descargar+musica+de+los+temerarios+mix+para+enamorarse+mas', suggesting a lure related to music downloads. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links indicates an attempt to distribute traffic or potentially host malicious content on other sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

Heuristics 4

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.
External URI info PDF_URI

PDF contains an external URL action
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://golowaki.ru/strik?utm_term=descargar+musica+de+los+temerarios+mix+para+enamorarse+mas PDF link annotation
- https://static.s123-cdn-static.com/uploads/4414672/normal_5fcd5368c398d.pdfIn PDF document text
- https://foxujutuz.weebly.com/uploads/1/3/4/3/134348357/fexajigilik.pdfIn PDF document text
- https://gixoxiri.weebly.com/uploads/1/3/4/7/134707295/8797401.pdfIn PDF document text
- https://bilewemebit.weebly.com/uploads/1/3/5/9/135964156/b2166106064.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4473637/normal_5fe4eb5358ea9.pdfIn PDF document text
- https://tajezutudod.weebly.com/uploads/1/3/1/3/131398094/wopujalerojan.pdfIn PDF document text
- https://vodazifuja.weebly.com/uploads/1/3/4/2/134265633/cb3abafcdb4c5d.pdfIn PDF document text
- https://faliroralomi.weebly.com/uploads/1/3/0/8/130874474/8401b3f50d9.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4370528/normal_5ff2c2f9b2cdc.pdfIn PDF document text
- https://buzufurabobozu.weebly.com/uploads/1/3/5/3/135304208/42e67c23f9.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/jubiferekaka/92177455006.pdfIn PDF document text
- https://s3.amazonaws.com/minaxigevani/how_to_call_a_soap_web_service_in_c_without_using_the_wsdl_for_proxy_classes.pdfIn PDF document text
- https://s3.amazonaws.com/zumomasugipeno/nijipu.pdfIn PDF document text
- https://s3.amazonaws.com/xafaxotaful/neet_sample_application_form.pdfIn PDF document text
- https://s3.amazonaws.com/xetasif/castle_ravenloft_board_game_expansion.pdfIn PDF document text
- https://s3.amazonaws.com/buwosevax/academic_report_writing_structure.pdfIn PDF document text
- https://s3.amazonaws.com/pesetufavo/vizio_e70-c3_remote_app.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/82d838a9-9248-4659-9924-d1551c0eba6d/wulujenolibowoveg.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/62f492d0-624c-450f-818b-d4389b6a4db6/how_to_use_excel_2013_for_students.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8bf25812-6810-4630-904a-1789c497af24/terorevupet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e9e4eeab-937a-4030-a77c-0b25ffc4bac7/gavaxetaka.pdfIn PDF document text
- https://s3.amazonaws.com/kifutizijebuj/sitogavutofijifozagep.pdfIn PDF document text
- https://s3.amazonaws.com/tugumeb/sacred_geometry_symbols_for_love.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ebba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEBBA	5460 bytes
SHA-256: `28f12d62a4f9f4134014b21e34a3361c0a6dbf64d665c6b73ca9c1645c3e2147`
`font_01_sfnt_off0000fe43.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE43	11972 bytes
SHA-256: `644386e181679ccab67adf3da0d98892ab04f8d3b671a365a0bd4a3aa34c5d6b`
`font_02_sfnt_off000125b7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x125B7	16312 bytes
SHA-256: `df4951f6f418aca86119b8f7189dacc6fd54a8b822085681ffaa5bef2562651a`

Open this report in the interactive analyzer, or submit your own file for analysis.