Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cb093b1228c4c69…

MALICIOUS

PDF

56.3 KB Created: 2020-09-30 07:42:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 012d42a9f0b6ee29b2eb4bce4fedaa86 SHA-1: 224ac21c8e78d45eab64a96b22494e3df4f65153 SHA-256: 0cb093b1228c4c69b8f03a408bf9dad9fae7827ff41621e31a4649ecd98334ee
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a malicious redirector link, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains the URL https://ggtraff.ru/mozel?keyword=ugc+care+pdf, which is likely used to redirect the user to a second-stage payload. The presence of a visual download button lure further supports the malicious intent.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/mozel?keyword=ugc+care+pdf
    • https://site-1037902.mozfiles.com/files/1037902/71596856050.pdf
    • https://site-1036938.mozfiles.com/files/1036938/wijigusojiduwo.pdf
    • https://site-1037178.mozfiles.com/files/1037178/bapadefebamevapovevaziguf.pdf
    • http://files.bonetownbbqri.com/uploads/1/3/1/3/131381142/3766469.pdf
    • http://molexu.asmonzaracing.com/uploads/1/3/1/6/131636601/2370103.pdf
    • http://files.monikasteinhoff.com/uploads/1/3/1/0/131069950/807580c.pdf
    • http://vexefix.justpoogie.net/uploads/1/3/1/3/131383837/1733609.pdf
    • https://site-1037916.mozfiles.com/files/1037916/vamapekaxeredaxid.pdf
    • https://site-1036627.mozfiles.com/files/1036627/juzoda.pdf
    • https://site-1037261.mozfiles.com/files/1037261/loxigaxi.pdf
    • https://site-1037203.mozfiles.com/files/1037203/80721440201.pdf
    • https://site-1037184.mozfiles.com/files/1037184/47143152881.pdf
    • https://site-1036823.mozfiles.com/files/1036823/49989832656.pdf
    • https://site-1037233.mozfiles.com/files/1037233/sinudatokasuxo.pdf
    • https://site-1037114.mozfiles.com/files/1037114/11531949407.pdf
    • https://site-1037261.mozfiles.com/files/1037261/tisexirowusofusawun.pdf
    • https://site-1036633.mozfiles.com/files/1036633/84468992899.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008322.bin
145893a7863b4536522fc8cf086fca5ca77ea7f864cf31df29b67fae7629761d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8322 5104 bytes
font_01_sfnt_off00009495.bin
828bdb5c6c02920e33174cc9459ce56b7e3ad5ad9cc447480991f2f6a3c6ced2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9495 10028 bytes
font_02_sfnt_off0000b71b.bin
f5640812e5c016fb18cd5e58d643cd9e906325e1e9b35261a2b59b459cdca209		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB71B 18664 bytes

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