Malicious PDF — malware analysis report

Static analysis result for SHA-256 d48d703b876e15fd…

MALICIOUS

PDF

50.7 KB Created: 2020-08-09 07:44:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f5cfbdfa8d37ad47b66fd598b75d701 SHA-1: bd42686faa20f671785841eb108dabae2429ce70 SHA-256: d48d703b876e15fdd928646bc0d9112244d98a60feef218b131a30b54c8f63cd
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=absolute+value+equations+and+inequalities+worksheets+pdf'. It also exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains references to educational material and the malicious redirector URL, suggesting a lure to trick users into clicking the link. No scripts were extracted from this sample.

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=absolute+value+equations+and+inequalities+worksheets+pdf
    • http://files.ronyafoyconnor.com/uploads/1/3/0/7/130776257/fa56ad2a68e6b.pdf
    • http://files.andrewveivers.com/uploads/1/3/0/7/130775102/regimupurukixexewoto.pdf
    • http://files.stonybrookenquirer.com/uploads/1/3/1/4/131406086/nujivikonujenu_fujotofoduli_gefuvukepuwama.pdf
    • http://files.chemungfire.com/uploads/1/3/1/4/131454523/0dff161.pdf
    • https://cdn.shopify.com/s/files/1/0432/8220/2782/files/973137005.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/jaxurabenewawaberedesag.pdf
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/jaxeb.pdf
    • https://cdn.shopify.com/s/files/1/0438/1091/4466/files/psychological_assessment_sample.pdf
    • https://cdn.shopify.com/s/files/1/0438/2969/0525/files/dicionrio_aulete.pdf
    • https://cdn.shopify.com/s/files/1/0432/9711/2219/files/84957306550.pdf
    • https://cdn.shopify.com/s/files/1/0439/1016/8744/files/xerirotibosisu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69892687871.pdf
    • https://cdn.shopify.com/s/files/1/0429/1916/6105/files/1770570675.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/entropic_ward_5e.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xazijejizamoketabuguta.pdf
    • https://cdn.shopify.com/s/files/1/0435/3739/9957/files/19483316184.pdf
    • https://cdn.shopify.com/s/files/1/0435/8779/7160/files/susijalafewefefunixelevij.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_off00007127.bin
1adedb9c8185c6c8ce463b5b265feb67ba7b97af396dd9871d0effefbb9ed52c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7127 5600 bytes
font_01_sfnt_off00008437.bin
f4cb974eea44c9fd2e7990272fed9fbe1f1a3404190ddcb616d8a85d6019891d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8437 10436 bytes
font_02_sfnt_off0000a7ef.bin
39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7EF 16092 bytes