Malicious PDF — malware analysis report

Static analysis result for SHA-256 42effdee220403c9…

MALICIOUS

PDF

40.9 KB Created: 2020-09-01 01:47:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62b4c1475b534e5b82f7a909f3bbf59a SHA-1: cb39366b06d381d9dd1e0ad31ee03f242fece13f SHA-256: 42effdee220403c92fe96695fc8c021466296fa92ce273f31661bae1fc85b37c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as pointing to a known malicious redirector. The document body, though heavily obfuscated, also contains the URL https://ttraff.cc/wix?keyword=asuran+2019+ringtone, which is likely the primary lure. The presence of numerous links suggests a link farm or redirection strategy to obscure the ultimate malicious destination. No scripts were extracted, and the file type is PDF, indicating a likely social engineering or redirection-based attack vector.

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/wix?keyword=asuran+2019+ringtone
    • https://static.usrfiles.com/ugd/74e905_da88427f6c484f3b8ca6675fcca19b09.pdf
    • https://static.usrfiles.com/ugd/d55797_4e592ea81a7345ad9c1fe5836c3a629d.pdf
    • https://static.usrfiles.com/ugd/b8c837_381aa3bd863a4c23a4a420bf189cbeb8.pdf
    • https://static.usrfiles.com/ugd/834936_c2648a13bdb242699f7cfdce04a2af8b.pdf
    • https://static.usrfiles.com/ugd/b8c837_5706dc71ac81497597232a735f013d13.pdf
    • https://static.usrfiles.com/ugd/b8c837_6eb6c193ad904bc6abfbbe9ed62d48d8.pdf
    • https://static.usrfiles.com/ugd/e3c460_766487ec6aa349b1963392cc452116f1.pdf
    • https://static.usrfiles.com/ugd/87a178_26e4593631f248f89e9232e49076e2f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_030a6e9254f049b4be1a0ede90d0dbbd.pdf
    • https://static.usrfiles.com/ugd/b8c837_22a277fea62c494f8fa2f190366ff8c7.pdf
    • https://static.usrfiles.com/ugd/7041e4_7317875abcf14a8fb2070b0886b9b8ec.pdf
    • https://cdn.shopify.com/s/files/1/0429/5802/8959/files/auld_lang_syne_sheet_music_choir.pdf
    • https://cdn.shopify.com/s/files/1/0434/8402/0898/files/vodaworuzorulagasubidizax.pdf
    • https://cdn.shopify.com/s/files/1/0437/1893/4677/files/android_developer_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0438/3745/6534/files/best_english_language_gcse_revision_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/3932/6365/files/72836614144.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_off000051e2.bin
b29f9350a720d2da9dc50567d08c4a82684db1fcb28a47e3a5788345b392d808
pdf-font-stream PDF embedded font (sfnt) at offset 0x51E2 6744 bytes
font_01_sfnt_off000062c7.bin
4e3b9780333afaeab2eed38aabc294f3248f37d03bf4f15fa89b41b6c5e8c996
pdf-font-stream PDF embedded font (sfnt) at offset 0x62C7 5292 bytes
font_02_sfnt_off000074d7.bin
cf2752c14ff3181f7f049214265f61391ad3c1ca9ddaecdb81499c2f225ef5ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x74D7 9824 bytes