Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d6cb597db637e90…

MALICIOUS

PDF

51.9 KB Created: 2020-08-10 21:39:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7553562e572adb999ba794c161024ab2 SHA-1: 0fd4b6a38f66fa340011d82a94ba558604551a1e SHA-256: 2d6cb597db637e900036759cb2f89c2473b65080d9dbc39852926d141d8a9f76
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=business+writing+for+dummies+2nd+edition+pdf`. This indicates a phishing or social engineering lure, likely attempting to redirect the user to a malicious site. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm used to obscure the final malicious destination.

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=business+writing+for+dummies+2nd+edition+pdf
    • http://xudoso.pearpack.com/uploads/1/3/0/8/130814328/ccbb221b.pdf
    • http://kopilam.mcarlsonjewelry.com/uploads/1/3/1/6/131606407/28896400e64c.pdf
    • http://pawejaw.forthestudentsuh.com/uploads/1/3/1/3/131380429/lesevap.pdf
    • http://files.lyndajcox.com/uploads/1/3/2/6/132680813/kepuv.pdf
    • http://files.luckyhobo.com/uploads/1/3/1/0/131070751/fuvimetame.pdf
    • https://cdn.shopify.com/s/files/1/0435/5863/3627/files/modenidijemoxafuzamo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4020/9056/files/fevojisumimunejuwob.pdf
    • https://cdn.shopify.com/s/files/1/0432/5995/3312/files/bengali_calendar_1425_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7790/2241/files/67049149015.pdf
    • https://cdn.shopify.com/s/files/1/0433/7644/3543/files/albert_camus_the_rebel_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/4455/2354/files/39217011632.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1077/files/65570363607.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2922/files/97129078995.pdf
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/tukilivateruja.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/videpijemajezeji.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80084587067.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sividejujim.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_off00007f26.bin
694e29f9cb38e87f5493224d3d4ab69d517552e450f86d3126c56a3bbe5075cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F26 5276 bytes
font_01_sfnt_off00009113.bin
77c223e4a32a6d88823815eabacb091862977dba8a47b495d98c831034146d0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9113 10308 bytes
font_02_sfnt_off0000b448.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xB448 4324 bytes