Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb750a8d0e4e1de5…

MALICIOUS

PDF

38.7 KB Created: 2020-09-01 00:53:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02a6d52229de189a3f1a7e2be6f4d53f SHA-1: 2903dd97b924b9bef7b35a3d7e9937289796c0be SHA-256: eb750a8d0e4e1de52ceef990db1ef05d2aad02ab59c4da5b8e013c21da5dc97d
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=parindey+song+ringtone++bestwap, which is also present in the heuristics. This suggests the document is designed to trick users into visiting this URL, likely for phishing or malware distribution. The presence of a large number of external PDF links, flagged by PDF_SEO_LINK_FARM, further supports the idea of a link farm designed to attract traffic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=parindey+song+ringtone++bestwap
    • https://static.usrfiles.com/ugd/90c678_32fa999463084514a19995dd2faa5752.pdf
    • https://static.usrfiles.com/ugd/79cb75_97ce215d26e8477bbd6ddaf557b670c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_ccae796802c1477ba7ee847c82219a7c.pdf
    • https://static.usrfiles.com/ugd/7603ae_afb2543048c24aab89666c47722fdfef.pdf
    • https://cdn.shopify.com/s/files/1/0457/7689/6156/files/chitta_chola_song_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/fiwoxadunemopad.pdf
    • https://static.usrfiles.com/ugd/db93e9_a3ebbfd1c9a54b3280722d1c04c5f8a1.pdf
    • https://static.usrfiles.com/ugd/09273f_f67bdf771cfa40d5904e16c75d257046.pdf
    • https://static.usrfiles.com/ugd/b8c837_a275e4d28f764478b9dd137a609f409c.pdf
    • https://static.usrfiles.com/ugd/6c032c_da79a3760caf4e30b17d0799bac7c104.pdf
    • https://static.usrfiles.com/ugd/b8c837_1638111e37bd4c80b3b30bbc8a6ccb82.pdf
    • https://static.usrfiles.com/ugd/b8c837_22fce6fc27c9450e922b808bbd7a702b.pdf
    • https://static.usrfiles.com/ugd/67e251_4ab3b5b3204b441a93d7d5c9e8f830f2.pdf
    • https://static.usrfiles.com/ugd/4d935e_737503f222584550a0f32812e614f94b.pdf
    • https://static.usrfiles.com/ugd/aa14a9_7f6aa774ddb646da8de01e43c3f7585a.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_off00004cff.bin
27bfa1903b587da11831aa797e4a5053b77150b9718e3499331105b06351d24a
pdf-font-stream PDF embedded font (sfnt) at offset 0x4CFF 5428 bytes
font_01_sfnt_off00005f96.bin
6bc3a73a34e1974b697ca8587488c02611ba8ede7d19c5fbb22ec278456b1e4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F96 9852 bytes
font_02_sfnt_off0000819c.bin
be536237aad5d26ad63203fece3c54382838250647cd4b5c0af66380631c256c
pdf-font-stream PDF embedded font (sfnt) at offset 0x819C 3048 bytes