Malicious PDF — malware analysis report

Static analysis result for SHA-256 48daaea52c4649fd…

MALICIOUS

PDF

44.4 KB Created: 2020-09-01 09:27:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fb0adcc2a3e75703a53c6d6c00c8598 SHA-1: 3b6b01778c9e4f431d14aa2b6419e40ae1c3af40 SHA-256: 48daaea52c4649fd102e2257607de4b81cea618ea49ca9ac3f6f9e368451fbe5
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=cinema+apk+not+loading'. The document body, though heavily obfuscated, contains this URL, suggesting a lure related to 'cinema apk not loading'. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to benign Shopify domains but likely serving as a distraction or part of a broader SEO poisoning strategy. 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.ru/wix?keyword=cinema+apk+not+loading
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/99248628268.pdf
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/81350457072.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4663/files/23081390193.pdf
    • https://cdn.shopify.com/s/files/1/0430/3912/9751/files/cherries_dietary_information.pdf
    • https://static.usrfiles.com/ugd/83e24f_f73a8e1d98b04e95b09a9be5a6593015.pdf
    • https://static.usrfiles.com/ugd/ec0c41_dc5acd9d7b28454fb1b2fd4a7f16cde6.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c74718e4fbe434ea351fb67400623f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_644cac6e97d74320b30df440a161a425.pdf
    • https://static.usrfiles.com/ugd/9904c2_04ba9cc70a214e1b9a550aa25c2c20a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e2cb3b5b63e4742ab0fab769c7a8d8c.pdf
    • https://static.usrfiles.com/ugd/735189_c4eb8ef7ce6443bd965ddeb983eeece8.pdf
    • https://static.usrfiles.com/ugd/63d3ad_9e9f53eefeef4e3d9ce33682ced74d0c.pdf
    • https://static.usrfiles.com/ugd/b8c837_7366e8f288254cdc89682d91f35a805a.pdf
    • https://static.usrfiles.com/ugd/0286dd_240530287010457a8a17e9cf1329a686.pdf
    • https://cdn.shopify.com/s/files/1/0431/8448/8607/files/barron_s_new_sat.pdf
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/norme_iso_14001_afnor.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/kifalepapunoxa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99289858455.pdf
    • https://cdn.shopify.com/s/files/1/0434/5957/5958/files/45984909199.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/
    • https://static.usrfiles.com/ugd/b8c837_3

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007003.bin
b0fc16d4dd29455fdb5f4a8fc3488a0e49f216ccc72dc1611e3818932e1ed4ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x7003 4976 bytes
font_01_sfnt_off000080db.bin
cfaa781503093f475d37d54cd198ac67ea5a616b70fcf02b2f6f620971953222
pdf-font-stream PDF embedded font (sfnt) at offset 0x80DB 10660 bytes