Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb409612c3042a65…

MALICIOUS

PDF

37.9 KB Created: 2020-04-17 11:18:39 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 909fe2cb1282cf462b33485d2f9aadd9 SHA-1: 08d88f1a9b4fc956654feba1293fab099a5fce06 SHA-256: cb409612c3042a650b465223c703c4c7d3dbec69534e8b9741d8e5e0990e3073
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, a technique often used for SEO spam or to redirect users to malicious websites. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, indicating a mass of external PDF links. The document body, though heavily obfuscated, contains a URL that aligns with the identified link farm strategy. No scripts were extracted from this sample.

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://goinggreengardening.com/uploads/1/3/0/5/130548192/130548192.html#binary+ionic+compounds+transition+metals+worksheet
    • http://leewadeaccountants.com/uploads/1/3/0/6/130605393/lemuneporubak.pdf
    • http://wixomkuhnceramics.com/uploads/1/3/1/4/131408068/fesijolazot_zezez.pdf
    • http://ezeicr.org/uploads/1/3/0/7/130738738/jumipukaxevipa.pdf
    • http://fiskeb�den.dk/uploads/1/3/0/8/130874164/8908468.pdf
    • http://naturenosebest.com/uploads/1/3/0/8/130814407/kunigup.pdf
    • http://rebekasview.com/uploads/1/3/1/0/131071095/b31ab5c9dd.pdf
    • http://cynthiagarner.com/uploads/1/3/0/5/130542937/6309646.pdf
    • http://soque.net/uploads/1/3/1/4/131411600/3370860.pdf
    • http://pinebrooksecurity.com/uploads/1/3/0/8/130815192/1340203.pdf
    • http://movetheword.org/uploads/1/3/0/4/130476146/7339447.pdf
    • http://disrupt.wtf/uploads/1/3/0/8/130874030/3a6dce8f7c.pdf
    • http://matthewkrupa.com/uploads/1/3/0/7/130738568/8bddd27a.pdf
    • http://xiaofangkitchen.com/uploads/1/3/0/7/130775959/9fb7b72cde.pdf
    • http://algoorith.com/uploads/1/3/0/2/130289799/xokixadanutuwe_mufik_momog.pdf
    • http://xiaofangk
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ae9.bin
bd406c6979a52955ee0d2dad331946e539e9d7f1c158017988158ebbe55aba6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE9 8052 bytes

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