Malicious PDF — malware analysis report

Static analysis result for SHA-256 87fb9fbf7bb0a3f0…

MALICIOUS

PDF

54.7 KB Created: 2020-08-04 10:47:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73677b3dd827356e99406b096dff2325 SHA-1: 064d791eb038d8fd9a64707be20ad0df1e66f3aa SHA-256: 87fb9fbf7bb0a3f04981387b4980ab7ba64e58b777dd166c5d927b17ae4921ea
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which are hosted on Shopify. The primary malicious URL is 'https://ttraff.com/pify?keyword=cerambycidae+of+the+world+biology+and+pest+management+pdf', which likely serves as a lure to download further malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.com/pify?keyword=cerambycidae+of+the+world+biology+and+pest+management+pdf
    • http://files.westmauisailandcanvas.com/uploads/1/3/1/1/131164129/9edfa498f699.pdf
    • http://files.latherbros.com/uploads/1/3/1/4/131406507/aaa7800215ffc02.pdf
    • http://files.profecpaintersllc.com/uploads/1/3/1/6/131606175/fizev.pdf
    • http://files.chanoiyan.com/uploads/1/3/0/7/130739251/ff3b7.pdf
    • http://turup.libertybellflags.com/uploads/1/3/0/7/130740051/rineg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rosetotirumeza.pdf
    • https://cdn.shopify.com/s/files/1/0435/7442/7806/files/wijazu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/11357786732.pdf
    • https://cdn.shopify.com/s/files/1/0435/5496/3617/files/jubakodezanuzegeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6567/files/38394748413.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71062637782.pdf
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/38423987453.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vakijuxek.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/77623296789.pdf
    • https://cdn.shopify.com/s/files/1/0431/1567/5815/files/how_to_install_mods_on_skyrim.pdf
    • https://cdn.shopify.com/s/files/1/0431/1253/0081/files/wixebo.pdf
    • https://cdn.shopify.com/s/files/1/0439/1796/7528/files/18518828288.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51906755497.pdf
    • https://cdn.shopify.com/s/files/1/0437/6150/0309/files/vagereziw.pdf
    • https://cdn.shopify.com/s/files/1/0433/5009/8078/files/78335997611.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009029.bin
698cc982b8d9fd7ba7e48fec1d0761962042a1ad21e8d7c6f333d847cb7d3bf6
pdf-font-stream PDF embedded font (sfnt) at offset 0x9029 5808 bytes
font_01_sfnt_off0000a3d6.bin
c9af18fd28fe74fe1cf2f82d61b59311fdec3f4a6eddf72fd75a6bf3f7f2d903
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3D6 11960 bytes