Malicious PDF — malware analysis report

Static analysis result for SHA-256 04de2d3e37c70f45…

MALICIOUS

PDF

39.3 KB Created: 2020-04-30 09:56:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9aff5e9f03cee39672b2ee0dbeb1d316 SHA-1: 3d08bab45e5a4b920066d780311dd258cd42a21d SHA-256: 04de2d3e37c70f450eae7a0b030f7cab8c922ef9a54a2fb0d1f8ca6798053d85
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to seemingly unrelated domains with numeric slugs, indicating a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious. The embedded URLs suggest the document is designed to redirect users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 http://thesweetmission.com/uploads/1/3/0/7/130775470/130775470.html#pixel+unknown+battleground+apkpure
    • http://korea-humaninitiative.org/uploads/1/3/0/8/130814241/rogureseligulikesad.pdf
    • http://ahacreativityconcepts.com/uploads/1/3/0/7/130738740/pazufi.pdf
    • http://impostermommy.com/uploads/1/3/0/4/130435622/bitalikaduz.pdf
    • http://tenwestdigital.com/uploads/1/3/0/6/130639630/guvanesijomu_kefosibikuxoz_ropurubulez_gubipegij.pdf
    • http://wealthwiseifa.com/uploads/1/3/0/5/130590278/wanilabi.pdf
    • http://heavenly-couture.shop/uploads/1/3/0/7/130739235/9191510.pdf
    • http://rebeccahoulden.com/uploads/1/3/0/5/130550858/8078437.pdf
    • http://babyoranges.com/uploads/1/3/1/4/131453565/xaxokes.pdf
    • https://twitter.50.1
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005291.bin
d0d76087a034c0818dacf1f03b2b8e764e3342b1d5560139ccffc4e5da0a0430		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5291 7656 bytes
font_01_sfnt_off00007066.bin
03a826679518afc8e56763ea0321942cc5035dc40574e8df155f0423b8c9fa30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7066 19260 bytes

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