Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc644167d0a5a557…

MALICIOUS

PDF

67.9 KB Created: 2020-08-03 23:53:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf2c5e3aa00812718d465e777e11f278 SHA-1: 2168f4cfbefc04d3d558af3379d3ead5562765ca SHA-256: cc644167d0a5a557a3c4105648c90e11aab3a8d50048e993a1ca2e993d91eb08
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URL points to a redirector service, which is a common technique for distributing malware or conducting phishing attacks. The document body, though heavily obfuscated, contains references to URLs that are likely part of this malicious infrastructure. No scripts were extracted from this sample.

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.com/pify?keyword=acta+constitutiva+de+una+constructora+en+mexico+pdf
    • http://files.pianolessonsbyjulie.com/uploads/1/3/1/3/131380868/59baef08.pdf
    • http://files.kimrichards.co.uk/uploads/1/3/2/6/132695829/tegesoni.pdf
    • http://files.suzukiviolinschool.com/uploads/1/3/0/7/130775434/zedelaze.pdf
    • http://files.iolascott.com/uploads/1/3/1/4/131437822/kavowowebogofulubez.pdf
    • http://files.evwordsmiths.com/uploads/1/3/1/4/131453535/tesesilugitudekosox.pdf
    • https://cdn.shopify.com/s/files/1/0431/0944/9884/files/dexasuwabuxamela.pdf
    • https://cdn.shopify.com/s/files/1/0436/0539/3571/files/2722453017.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/86647120008.pdf
    • https://cdn.shopify.com/s/files/1/0438/1619/0112/files/gusar.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/wexorizupexajagujori.pdf
    • https://cdn.shopify.com/s/files/1/0437/2057/3082/files/gikerimofuluvodur.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/2000/files/fl_studio_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7087/files/82216872298.pdf
    • https://cdn.shopify.com/s/files/1/0431/0636/9697/files/guvij.pdf
    • https://cdn.shopify.com/s/files/1/0448/5578/7681/files/manaclavado_en_un_bar.pdf
    • https://cdn.shopify.com/s/files/1/0428/6591/8118/files/ziniwinavujimugidajo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8457/1031/files/16162351316.pdf
    • https://cdn.shopify.com/s/files/1/0433/0012/6880/files/94596278093.pdf
    • https://cdn.shopify.com/s/files/1/0428/4098/1670/files/76474522409.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_off0000ae9d.bin
59a0462d1be36dd5b5deaba5429f9886e4768e117450b79fea6ee945a231c179
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE9D 5268 bytes
font_01_sfnt_off0000c06a.bin
897b03764fdf5b3fe426cea73ff79026790f7226aebf941621a4afeb1a705c17
pdf-font-stream PDF embedded font (sfnt) at offset 0xC06A 16396 bytes
font_02_sfnt_off0000f1ee.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xF1EE 4324 bytes