Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9c703ee34477c58…

MALICIOUS

PDF

54.2 KB Created: 2020-08-20 00:20:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bcfb2174da2ec1f3c5a9ba3e13e321c SHA-1: e95fd425342c0ea3975dc3ac1a97fb420ec94001 SHA-256: f9c703ee34477c582ce08c5730aee58648ebd6474a9a23329fd30db1a855d183
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=triangle+congruence+worksheets+pdf'. This URL is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains this same URL, reinforcing its malicious intent. The file also exhibits characteristics of a link farm, with numerous external PDF links, suggesting a broader campaign to distribute malicious content.

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=triangle+congruence+worksheets+pdf
    • http://files.npsarea12.com/uploads/1/3/1/6/131606546/vanabigawabel_xenogeva_babimofu_pisutikitafabo.pdf
    • http://files.timeless-transformations.net/uploads/1/3/0/8/130874394/jekiridijit.pdf
    • http://files.coachdavidhenley.com/uploads/1/3/2/3/132303150/7319031.pdf
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/57145862928.pdf
    • https://cdn.shopify.com/s/files/1/0438/3031/3122/files/36743050129.pdf
    • https://cdn.shopify.com/s/files/1/0434/7383/0040/files/angielski_nauka_swek.pdf
    • https://cdn.shopify.com/s/files/1/0433/5045/8520/files/zopagobotubunekevo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7663/3247/files/any_video_chrome_addon.pdf
    • https://cdn.shopify.com/s/files/1/0430/0252/7895/files/33500727100.pdf
    • https://cdn.shopify.com/s/files/1/0435/2121/2570/files/56804574534.pdf
    • https://cdn.shopify.com/s/files/1/0436/1990/9794/files/juvagaj.pdf
    • https://cdn.shopify.com/s/files/1/0450/2247/8494/files/strategic_planning_sample.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/punafaga.pdf
    • https://cdn.shopify.com/s/files/1/0435/0751/5558/files/28317572883.pdf
    • https://cdn.shopify.com/s/files/1/0438/0337/7824/files/37217930052.pdf
    • https://cdn.shopify.com/s/files/1/0460/1357/9423/files/audacity_for_mac_sierra.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pamuzinesikajojefex.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/1/0438/3031/31

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000813c.bin
afcf6330ee0a05c06453db3305c49efe20f2d7e13c6a83fa20227802fe9d8abb
pdf-font-stream PDF embedded font (sfnt) at offset 0x813C 5524 bytes
font_01_sfnt_off0000940a.bin
211ad0ca13847aea56a4bffdd26c2a0dde20ff09a7002a24c721cdd733bfb9af
pdf-font-stream PDF embedded font (sfnt) at offset 0x940A 10052 bytes
font_02_sfnt_off0000b672.bin
062f8a7185608a18dbd56baf48eb14c791e3c6ea8866a2ddd6a03467109098f1
pdf-font-stream PDF embedded font (sfnt) at offset 0xB672 16072 bytes