Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdce62314ac0d784…

MALICIOUS

PDF

59.9 KB Created: 2020-09-01 01:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d39e1952bcfeff459646ceef9bbce47 SHA-1: f11a7fc9adb3c4700bf424ffea8ef1c0049c959b SHA-256: bdce62314ac0d7842ff88b71687917787049c88ec3116dcbeaf32e4da6e3fcf0
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=botim+for+windows+xp'. The document body, though heavily obfuscated, contains references to this URL and also lists numerous other PDF links, many hosted on cdn.shopify.com, suggesting a link farm or redirection strategy. The primary malicious URL is likely used to direct users to a malicious site, potentially for further exploitation or credential harvesting.

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=botim+for+windows+xp
    • https://static.usrfiles.com/ugd/61b8bf_e7d4edee3fca4b54b46e64169a91d852.pdf
    • https://static.usrfiles.com/ugd/b8c837_3011a4f3a1d545b59a2c0ab3f6444fef.pdf
    • https://static.usrfiles.com/ugd/5de1df_3443be3c8c1a4dcc97aed5f36b46a10f.pdf
    • https://static.usrfiles.com/ugd/b65acf_d697484b7fc54458bf2a4b8485641608.pdf
    • https://static.usrfiles.com/ugd/a44510_467260c7424f439d8ba98bc8091fe46f.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/31323076467.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/basugogigarerebid.pdf
    • https://cdn.shopify.com/s/files/1/0430/3156/0354/files/89521622324.pdf
    • https://cdn.shopify.com/s/files/1/0437/0956/3035/files/galabuges.pdf
    • https://cdn.shopify.com/s/files/1/0450/3601/1678/files/css_height_vh_android.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3363/files/65394963903.pdf
    • https://cdn.shopify.com/s/files/1/0435/8445/4811/files/78595246045.pdf
    • https://cdn.shopify.com/s/files/1/0434/7504/2457/files/complex_sentence_worksheet_6th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0434/5813/4182/files/invisible_maniac_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/78490849309.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/52307252456.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/xelixox.pdf
    • https://cdn.shopify.com/s/files/1/0464/6495/8616/files/fojoroderifozo.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007869.bin
a497fc52ef216d2369a1cda088bdeb49e1b2edea4e2999984a7939df6a238a3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7869 6416 bytes
font_01_sfnt_off00008833.bin
3a4dbdb5c9c0b29e9fe681dbf9e51e65eadc8cf3fa0cd2d6dc2770e27591adb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8833 4824 bytes
font_02_sfnt_off0000988d.bin
425a64476679b43c84674b2e9524f77568fb9d5605603a2e99d9d2d041b7e513		 pdf-font-stream PDF embedded font (sfnt) at offset 0x988D 10944 bytes
font_03_sfnt_off0000bdc4.bin
9c47a8ecf7103172530608de19fa11afb8a035ab51042e9cb8c6809f09ebb189		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDC4 16344 bytes
font_04_sfnt_off0000d33d.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD33D 4324 bytes

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