Malicious PDF — malware analysis report

Static analysis result for SHA-256 4683e85106668a4d…

MALICIOUS

PDF

64.5 KB Created: 2020-08-08 02:52:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69f479967c5a6020822ca44a83b2dcf2 SHA-1: a3284c00dab5c9ed79acd3dc3b27f6927a0115f5 SHA-256: 4683e85106668a4d817b04daf46d2c486b900ada2cbeb100a8040075463ed811
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, masquerading as 'geometric progression notes'. One of these links, https://ttraff.cc/pify?keyword=geometric+progression+notes+pdf, is identified as a malicious redirector. The document's primary purpose appears to be to drive traffic to this malicious URL, likely as part of a phishing or malware distribution scheme.

Heuristics 3

  • 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.
  • 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.
  • 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://ttraff.cc/pify?keyword=geometric+progression+notes+pdf
    • http://files.diversityserves.org/uploads/1/3/1/4/131454899/835dc4447.pdf
    • http://files.yurrugar.com/uploads/1/3/1/4/131453132/binikidapo_putavaf_pimititipidijun.pdf
    • http://files.themagiciansindicator.com/uploads/1/3/2/6/132681384/b8eaf34186cf7.pdf
    • http://files.marydanroth.com/uploads/1/3/1/3/131384771/340cfc127.pdf
    • http://files.jasperlonestaryouth.com/uploads/1/3/2/6/132681426/lebesu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/vumigivamufun.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/97500650507.pdf
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/magaduwuzeloferibifarema.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/tudekisodimewan.pdf
    • https://cdn.shopify.com/s/files/1/0440/7253/4166/files/bug_out_bag_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/48161504822.pdf
    • https://cdn.shopify.com/s/files/1/0435/1062/8511/files/ponefuzege.pdf
    • https://cdn.shopify.com/s/files/1/0435/5473/4241/files/21159036613.pdf
    • https://cdn.shopify.com/s/files/1/0431/6001/0906/files/91405520214.pdf
    • https://cdn.shopify.com/s/files/1/0431/1131/7658/files/jigigo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5122/9089/files/77467997412.pdf
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/agenda_escolar_2020_20_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/delete_all_favorites_on_twitter.pdf
    • https://cdn.shopify.com/s/files/1/0431/4519/9777/files/46390483853.pdf
    • https://cdn.shopify.com/s/files/1/0434/4040/6684/files/piridemur.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/
    • https://cdn.shopify.com/s/files/1/0

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099d3.bin
42461a438989b9df327bd4e72c74f253e873f70ab647a954278ea02e4a63885f
pdf-font-stream PDF embedded font (sfnt) at offset 0x99D3 5264 bytes
font_01_sfnt_off0000abb4.bin
a433a612e2e0d2c5e19f8e220d289daa9f530c9411bf5acef84489e20b538ac5
pdf-font-stream PDF embedded font (sfnt) at offset 0xABB4 15972 bytes
font_02_sfnt_off0000de72.bin
44def9dc674df610fe41fc9db42784bba342d5f677e4986274feae7507f0d963
pdf-font-stream PDF embedded font (sfnt) at offset 0xDE72 16296 bytes