Malicious PDF — malware analysis report

Static analysis result for SHA-256 55bc24be551ed15f…

MALICIOUS

PDF

46.8 KB Created: 2020-09-01 21:18:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71c4124da0552ba111af0a835c843de3 SHA-1: c531eeb1ce8e8a3aab6cfaf4ea9907ec19de943d SHA-256: 55bc24be551ed15f04198c2ffe05b6fc72485efb008c2d4f8d939996ffaea49f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=aradhana+songs++telugu+naa'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the malicious URL, suggesting a lure to a phishing or malware distribution site. No scripts were extracted, and the family is undetermined.

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=aradhana+songs++telugu+naa
    • https://static.usrfiles.com/ugd/0dd040_ecbc1f9cb6264e23a07efc93ab32a6d0.pdf
    • https://static.usrfiles.com/ugd/1c90dc_e78d3e71d1074abe88b907e2a0b961b0.pdf
    • https://static.usrfiles.com/ugd/0ad6c7_7cb97c3273974ac3a0c212e96c47178d.pdf
    • https://static.usrfiles.com/ugd/f3cb45_826bdd6b9aad4ed88e3460ec748a70f0.pdf
    • https://static.usrfiles.com/ugd/4dd980_f77c28026e3e493daa7d6c08cf78453c.pdf
    • https://static.usrfiles.com/ugd/37428b_ac30836c0b934e17a7027842254e70a2.pdf
    • https://static.usrfiles.com/ugd/cc14e4_c870ccd11fc1423b9ea7cdf721b40248.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ed75cfebe6046b6a65ea0b82b94befb.pdf
    • https://static.usrfiles.com/ugd/76de1a_229e5a2a4a9b46279861c97eda40606a.pdf
    • https://static.usrfiles.com/ugd/943725_bbf803470aed414699e62732ad02bff2.pdf
    • https://cdn.shopify.com/s/files/1/0440/9714/2936/files/books_for_learning_spanish_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7876/files/nasodolodedo.pdf
    • https://cdn.shopify.com/s/files/1/0439/6374/4414/files/u-_bahn_berlin_karte.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/ankusham_video_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/6127/8885/files/android_music_video_app.pdf
    • https://static.usrfiles.com/ugd/48d9a1_ccc9ddf39dd14b39a82dc6e216eae244.pdf
    • https://static.usrfiles.com/ugd/e02969_de27e0b734c84ad5a4bb72115165fa81.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_off000064ee.bin
10e0472027d051406ff73d8c3a7aa20bfc4f88357746f3b44241d61d72d67c78
pdf-font-stream PDF embedded font (sfnt) at offset 0x64EE 5076 bytes
font_01_sfnt_off00007625.bin
0b066437e15a4e7b292ce0f8d695c29ecc9cf7cd94f8e77cd1e4984a437b637e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7625 2284 bytes
font_02_sfnt_off000080d5.bin
d2da25de564c307887ec1de08ff9f8ee2c1713f0d759a29161f2317f37d7b09d
pdf-font-stream PDF embedded font (sfnt) at offset 0x80D5 14632 bytes