Malicious PDF — malware analysis report

Static analysis result for SHA-256 977211678d6f87da…

MALICIOUS

PDF

46.4 KB Created: 2020-08-07 00:30:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 485a3db42769316ddaaf7e0a9f401c5a SHA-1: 3fc46d217e6038e1a97a1bffa70d8ae19076b884 SHA-256: 977211678d6f87da6637775f40d46722be4985ecc5db5eab1597cc3a81e6aea3
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=partnership+deed+in+gujarati+pdf'. This indicates a social engineering lure, likely to trick the user into downloading further malware. The document body, though heavily obfuscated, contains references to 'partnership deed in gujarati pdf' and the redirector URL, reinforcing the lure. The file also exhibits a PDF link farm heuristic, with numerous embedded links, many pointing to Shopify domains, suggesting an attempt to blend in with legitimate content while hosting malicious redirects.

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=partnership+deed+in+gujarati+pdf
    • http://files.dizacstickers.co.nz/uploads/1/3/1/4/131437832/fenukezun.pdf
    • http://files.qwerkzfudge.com/uploads/1/3/1/4/131453024/jejudomavosafozilof.pdf
    • http://files.nic-hunter.com/uploads/1/3/0/8/130873987/saromisexegituk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/winch_harbor_freight.pdf
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/zevevawowuwawa.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/costing_methods_garment_manufacturing.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/advanced_english_multiple_choice_test_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/9241/0525/files/gorux.pdf
    • https://cdn.shopify.com/s/files/1/0435/6312/2843/files/pikomelunanimaxozob.pdf
    • https://cdn.shopify.com/s/files/1/0435/2779/8944/files/xakonuvifexuvuxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/26414895325.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/davixi.pdf
    • https://cdn.shopify.com/s/files/1/0435/1649/3976/files/lanupe.pdf
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/72427081557.pdf
    • https://cdn.shopify.com/s/files/1/0436/3796/4960/files/77177139453.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/gekoloxonurijejasuwuluvis.pdf
    • https://cdn.shopify.com/s/files/1/0449/9243/0248/files/76801152493.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_off000062e9.bin
59576f447ab29012beeafd7c1f69f9f1eaa96a79d9403c0245fda13e60528666
pdf-font-stream PDF embedded font (sfnt) at offset 0x62E9 5348 bytes
font_01_sfnt_off0000751b.bin
07d5f13f1c71899772aad57a5e07a2d185f061cff2d06583a22d16b0c33ffd7a
pdf-font-stream PDF embedded font (sfnt) at offset 0x751B 5576 bytes
font_02_sfnt_off0000873d.bin
18c2e12c326ce199f7ca8dc65da0c6a82102d9a33fec71e2199695ea4990285e
pdf-font-stream PDF embedded font (sfnt) at offset 0x873D 10824 bytes