Malicious PDF — malware analysis report

Static analysis result for SHA-256 f58a888ad84905d2…

MALICIOUS

PDF

47.4 KB Created: 2020-04-09 06:29:35 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a41d92384b400b65d22efd78116a2e3f SHA-1: f1c08e0c0e691846cbe717e1cea5377096a44bce SHA-256: f58a888ad84905d215f9cf5d0117755a3969d9dbef9d0408d4f39ce9f60b99a8
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a mass external link farm, with numerous URLs pointing to various domains. The ML classifier strongly indicated maliciousness. The document body, though partially corrupted, contains the phrase 'El ciclo del agua para explicar a niños' and references 'wkhtmltopdf', suggesting a potential lure related to educational content. The primary attack pattern involves redirecting users to a large number of external sites, likely for SEO spam or to host further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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
  • 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 http://themanyadventuresofus.com/uploads/1/3/0/5/130588839/130588839.html#el+ciclo+del+agua+para+explicar+a+ni%C3%B1os
    • http://osoyoosmarine.com/uploads/1/3/0/7/130739419/ladikisenufa_fazedusugefax.pdf
    • http://a-rat.com/uploads/1/3/1/0/131070645/1258540.pdf
    • http://alignforbirth.com/uploads/1/3/0/7/130738875/3669068.pdf
    • http://veteransmusicfest.com/uploads/1/3/1/4/131437005/c99cd0bdbbd59a5.pdf
    • http://h4sd.com/uploads/1/3/1/0/131070646/bijimonod.pdf
    • http://jordynoakland.com/uploads/1/3/0/7/130739373/9956383.pdf
    • http://encweddingtalk.com/uploads/1/3/0/2/130291416/bc18a327eb6.pdf
    • http://ll-technology.com/uploads/1/3/0/3/130379527/115095.pdf
    • http://barwaaqo47.com/uploads/1/3/0/4/130435780/figiler-zipagiburolifas.pdf
    • http://stpatricksdublin.com/uploads/1/3/0/8/130874059/fabolulatevekag.pdf
    • http://cimakeupartistry.net/uploads/1/3/1/3/131383657/zidoviwilogaz-bekedagotovuko-nozagi-luwonapa.pdf
    • http://midici.store/uploads/1/3/0/5/130545249/gowefejowom_bazotimimi_wobapu_nelas.pdf
    • http://project2022.org/uploads/1/3/0/7/130740196/mekidimoluxi.pdf
    • http://sinfullysabryna.com/uploads/1/3/0/5/130540683/1062982.pdf
    • http://casphotoart.net/uploads/1/3/0/9/130969551/purikomululiluni.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.

FilenameKindSourceSize
font_00_sfnt_off00006c5d.bin
2d481360220d574cad504e9513c7c90d08446a8705e962e20d0ec2b3909e5e5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5D 9568 bytes
font_01_sfnt_off00008e41.bin
76fac48b17a07bbbb7a8936ab4809ab9f655145ecb75f32ef9ae4f77d04f918a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E41 2832 bytes
font_02_sfnt_off00009856.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9856 16036 bytes

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