Malicious PDF — malware analysis report

Static analysis result for SHA-256 99c160410734a8ef…

MALICIOUS

PDF

45.1 KB Created: 2020-08-04 01:37:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a801868f63b85225a2cf279816cda93f SHA-1: 3cd5015c332a613fecfaeabffc76c9c4bef31e8c SHA-256: 99c160410734a8ef280f208364129a490ae8473b72fe7d383dbe0dd0c17ec25b
128 Risk Score

Malware Insights

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

The PDF contains numerous links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=eidetic+memory+training+pdf', which is a critical finding. This suggests the document's primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting. The presence of a 'download button' heuristic further supports the lure-based attack vector.

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.
  • 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.
  • 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
  • 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=eidetic+memory+training+pdf
    • http://files.penhurstacademy.co.za/uploads/1/3/0/9/130969036/bepibizepepedu.pdf
    • http://tuker.writerliz.com/uploads/1/3/2/6/132696323/sadofibupizi_vijilidu_mezuxur.pdf
    • http://files.exxcelpainting.com/uploads/1/3/1/3/131398573/kufux.pdf
    • http://files.daughterofthestarswellness.com/uploads/1/3/1/6/131636625/saneta-nimuk-bonumofa-duvasiwopasep.pdf
    • https://cdn.shopify.com/s/files/1/0433/5396/4712/files/sims_3_house_plans.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/57362451654.pdf
    • https://cdn.shopify.com/s/files/1/0434/9889/7574/files/25667921864.pdf
    • https://cdn.shopify.com/s/files/1/0433/9469/5324/files/wafawagagaku.pdf
    • https://cdn.shopify.com/s/files/1/0432/3429/5966/files/38868761163.pdf
    • https://cdn.shopify.com/s/files/1/0434/2756/1634/files/rilezoli.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/wazebizojipejibo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/loxajokofuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/7182/2229/files/33842107347.pdf
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/pakokefudibe.pdf
    • https://cdn.shopify.com/s/files/1/0435/9657/8979/files/wemadakub.pdf
    • https://cdn.shopify.com/s/files/1/0434/1147/2541/files/61280044433.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006334.bin
e1833a52e973d39ef4876958bd57bc538837ec584bbcc71943df4dd674731d20
pdf-font-stream PDF embedded font (sfnt) at offset 0x6334 5112 bytes
font_01_sfnt_off00007485.bin
d69f86728f41a9a07975108edd8c8c27dbc9520766d82f3b8c39b154dce482fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7485 10240 bytes
font_02_sfnt_off00009796.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9796 4324 bytes