Malicious PDF — malware analysis report

Static analysis result for SHA-256 df448ed02ccebff8…

MALICIOUS

PDF

42.6 KB Created: 2020-08-20 06:00:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bcab715af79a31591513f350417b3e9 SHA-1: 1cb2e6de03f23acd1fa016ab20b78eed435bfeb2 SHA-256: df448ed02ccebff8b9c64aa6cc80d34069df035dff0fb5a2c23a317425f476be
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM indicates a large number of external PDF links, many hosted on Shopify. The document body contains text related to 'Easera systune crack', suggesting a lure for cracked software. The primary malicious IOC is the redirector URL which likely leads to further 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=easera+systune++crack
    • http://lotodu.thatenglishteacher.com/uploads/1/3/1/0/131070374/d31d1429ba7e3f.pdf
    • http://jizudos.slayedalteregos.com/uploads/1/3/2/7/132740405/fedasosokiwu-jubevifaxa.pdf
    • http://files.ddtotalfitness.ca/uploads/1/3/0/7/130739922/kagadaviluliz.pdf
    • https://cdn.shopify.com/s/files/1/0433/4845/9675/files/jujimizisesekafijeja.pdf
    • https://cdn.shopify.com/s/files/1/0432/6958/7104/files/access_to_information_program.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuvitew.pdf
    • https://cdn.shopify.com/s/files/1/0438/2733/1232/files/bosoxebidafunuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/5842/1142/files/functional_morphology_in_vertebrate_paleontology.pdf
    • https://cdn.shopify.com/s/files/1/0437/0461/5066/files/4851836932.pdf
    • https://cdn.shopify.com/s/files/1/0435/2635/7143/files/razajefopukizomaxe.pdf
    • https://cdn.shopify.com/s/files/1/0429/6910/4540/files/descriptive_epidemiology_study_design.pdf
    • https://cdn.shopify.com/s/files/1/0435/5129/3603/files/vozoko.pdf
    • https://cdn.shopify.com/s/files/1/0434/3031/4133/files/59338081103.pdf
    • https://cdn.shopify.com/s/files/1/0447/5482/9463/files/anti_lock_braking_system_seminar.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_off00006791.bin
c0a0ff2cf31f6e1fc656e391e7f8ea256d9b4cebec0d9b5fa016f98ce7f44117		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6791 4884 bytes
font_01_sfnt_off00007847.bin
f8e2ce1a555fdb0b04ae5f9b57cf9c83a339b4fdc07ed47be1cdb595c3e3e1ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7847 10900 bytes

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