Malicious PDF — malware analysis report

Static analysis result for SHA-256 2441e1c3f7cca08a…

MALICIOUS

PDF

39.0 KB Created: 2020-04-04 11:07:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 052cecd3bfa6d5d7b276f2f5dcf59e59 SHA-1: f0e5922ba0b2affa63008cc22fcb264184fb1e8b SHA-256: 2441e1c3f7cca08ad35091cea540dfc5835a6c86dfea4235657aeba99502c6d1
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are dynamically generated and point to unrelated domains, indicating a link farm or SEO spam tactic. The primary lure is a seemingly helpful guide on printing photos from a mobile device to a computer, which redirects to malicious URLs. The ML classifier strongly supports the malicious nature of this PDF.

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://tcncleanservice.com/uploads/1/3/1/3/131380623/131380623.html#como+imprimir+una+foto+del+celular+ala+computadora
    • http://knightwoodfrench.com/uploads/1/3/0/4/130489168/wipudexokaxof_pimanufonarifo_pogopexifaguse_mubonen.pdf
    • http://gotoinvestors.net/uploads/1/3/0/4/130483355/nanibusod.pdf
    • http://thrivingrootsfarm.org/uploads/1/3/0/7/130739860/85845.pdf
    • http://grandrapidslasercenter.com/uploads/1/3/0/2/130289693/simemenakomowuk_tutiwotupazima_zikevun_najod.pdf
    • http://lifewardliving.com/uploads/1/3/0/7/130775768/926c3.pdf
    • http://bbinspired.org/uploads/1/3/0/8/130874580/7295296.pdf
    • http://adestramente.com/uploads/1/3/0/6/130640061/buzavutoke_pusuloxababifu_jujotibagisol_gunesavel.pdf
    • http://andantejewelry.com/uploads/1/3/1/4/131407315/zuvadufawatitib.pdf
    • http://koltenterprise.com/uploads/1/3/1/4/131407857/totem.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060a4.bin
68d74602f8b4d61127de410445d662b4d51d62a640df2391ea19e6fcfe985d30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60A4 8516 bytes
font_01_sfnt_off00007fa9.bin
885781ec91db75dc8c4a6a3d3dac0324bdfdb8f2239dab70466c62035ae072da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA9 4144 bytes

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