Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ee2f9d38e2eb87…

MALICIOUS

PDF

51.5 KB Created: 2020-09-04 01:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8a834401fd7798c953d8d83080b4867 SHA-1: 7568de3f95b1a38e71cacc1154e0fa1a8304ff4f SHA-256: 93ee2f9d38e2eb8709e9325ebc4cab4f0ca1d70ffe55a8758e22aaaf3e0c6f83
152 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector infrastructure, specifically `https://ttraff.club/pify?keyword=carrying+you+laputa+piano+sheet+music`. This suggests a phishing or scam attempt, using a seemingly innocuous topic to entice clicks. The PDF also hosts a large number of external links, many of which point to `static.usrfiles.com`, indicating a potential link farm or distribution mechanism. No scripts were extracted, but the presence of malicious links is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.club/pify?keyword=carrying+you+laputa+piano+sheet+music
    • https://static.usrfiles.com/ugd/5ad03d_571be9f99af942c2aeb68a2d2495772e.pdf
    • https://static.usrfiles.com/ugd/01bc73_bf642565a27347b59e3619be751aa94c.pdf
    • https://static.usrfiles.com/ugd/b8c837_a9b326143fe24e86aca53f7e7acfd20c.pdf
    • https://static.usrfiles.com/ugd/b8c837_93fe84e100b6477d969d195a3613f412.pdf
    • https://static.usrfiles.com/ugd/dcbeda_16bed0054f794ca4905466c9c6ad5f7f.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/pales.pdf
    • https://cdn.shopify.com/s/files/1/0436/0005/2387/files/68064975004.pdf
    • https://cdn.shopify.com/s/files/1/0429/5652/1631/files/wedding_budget_planner.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gevuruliwineda.pdf
    • https://static.usrfiles.com/ugd/0bcf16_ba51037ec2aa47df945426e5a777e050.pdf
    • https://static.usrfiles.com/ugd/4e6dd5_eae66dfb809b4e0197fe6905f08c1e9f.pdf
    • https://static.usrfiles.com/ugd/0a052f_6953e14ebc2e4515b41e64f8dfcab7b3.pdf
    • https://static.usrfiles.com/ugd/b2ba6b_0dd4bca0370a44b483e61012dda0c143.pdf
    • https://static.usrfiles.com/ugd/f68081_ce2122deadbd4c54919622f191c332b3.pdf
    • https://static.usrfiles.com/ugd/338562_88be56152c2540f9b1621f1e03e45318.pdf
    • https://static.usrfiles.com/ugd/9b2d9b_cd4588b160d3487ba281c721451aa67d.pdf
    • https://static.usrfiles.com/ugd/8b9728_6cd5d27c495e4d5cae5837bf9da304fd.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_off00006ac4.bin
79057adb28c593689c95ef525b3b60b408fb76f791915aee6ca65976179d6282		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC4 5328 bytes
font_01_sfnt_off00007d52.bin
136b726f131e475fa866bfb98dd1ba8e49115c9bb98ef0b1970b6f8b9d19c071		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D52 5352 bytes
font_02_sfnt_off00008f6b.bin
a29c615d382cc80fc514c5eacb524a5b0d9bf7432f61b01d6d0ff2a536b2b284		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6B 15120 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.