Malicious PDF — malware analysis report

Static analysis result for SHA-256 35e85c2557cba473…

MALICIOUS

PDF

50.9 KB Created: 2020-04-14 00:53:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-08-25
MD5: b0dc82d4e3d52dcd15320ce8f1216522 SHA-1: bb1aafae3ec41652703c9603860202d7e52f38cb SHA-256: 35e85c2557cba4736c7ae6a32ec815a7e0494f00988f47909e12b0246bb4f7db
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, many of which appear to be part of a link farm. The embedded document body text, though heavily obfuscated, contains a URL that matches one of the extracted external links. This suggests the primary purpose is to redirect users to a network of potentially malicious or SEO-abused sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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://giemphigher.com/uploads/1/3/1/1/131164125/131164125.html#astm+d-+445+viscosidad+pdf PDF link annotation
    • http://ourmissionkids.com/uploads/1/3/0/2/130288402/98e6a81e8.pdfIn PDF document text
    • http://keregalos.org/uploads/1/3/0/7/130776883/rezoputofilo.pdfIn PDF document text
    • http://environeuro.com/uploads/1/3/1/0/131071056/wosisedef.pdfIn PDF document text
    • http://wildbreedfarms.com/uploads/1/3/0/5/130539059/xizaboz_vuladosekuseme_zejekufewozexew.pdfIn PDF document text
    • http://calyxhomeopathy.com/uploads/1/3/0/7/130740391/ziwijam_marotobob_zagibod.pdfIn PDF document text
    • http://indysop.com/uploads/1/3/1/3/131398606/kerozoboladuxav_kevazofelot.pdfIn PDF document text
    • http://norwichcountrycape.com/uploads/1/3/1/1/131164460/dakizi_tofugopigakulo_xegixifin_bizemedeba.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f24.bin
915f7affb020939288ac872500861731365ef24b8d1cb853ab555042fd63e50b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F24 8376 bytes
font_01_sfnt_off00009e28.bin
911a51fdbb53f497f3b32957376dcc5972570b1e3a3a8322621b0a775dbec987		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E28 3068 bytes
font_02_sfnt_off0000a8fb.bin
b3affdfdfee497c2d3230853582529cf395d265bfdbb8cde7d84ae9c33602211		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8FB 16036 bytes

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