Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9bf68beeaf72a95…

MALICIOUS

PDF

150.5 KB Created: 2020-08-02 13:14:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ba67036f0536d8c15f34163f9c76e4d SHA-1: ee3be6adb7dee252319a1a2985dda0c3bbdbc4b4 SHA-256: b9bf68beeaf72a95baf505726a173fc1557bedc2567e73805f5a79172e59e820
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, specifically `https://ttraff.cc/pify?keyword=how+to+get+freeshop+on+3ds`. This URL is presented within the document body, suggesting a social engineering attempt to trick the user into visiting a potentially harmful site. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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.cc/pify?keyword=how+to+get+freeshop+on+3ds
    • http://files.andrewjack.net/uploads/1/3/1/3/131380008/48fcb728.pdf
    • http://files.celebrateyourstories.com/uploads/1/3/1/8/131856347/runasixa.pdf
    • http://files.compassionatewellnessoc.com/uploads/1/3/0/7/130776611/9389288.pdf
    • http://files.painpg.info/uploads/1/3/2/6/132682655/8772951.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nimapudusakodinufuzexive.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riwemabosemuridaredexe.pdf
    • https://cdn.shopify.com/s/files/1/0439/2042/5115/files/xagogawog.pdf
    • https://cdn.shopify.com/s/files/1/0432/6018/2692/files/26059970715.pdf
    • https://cdn.shopify.com/s/files/1/0435/1908/2655/files/73973254147.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/96582067939.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/58278661878.pdf
    • https://cdn.shopify.com/s/files/1/0434/5790/4792/files/xitonarumajo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/79763747428.pdf
    • https://cdn.shopify.com/s/files/1/0435/1547/8176/files/xolazotitadut.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6338597663.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/77396023881.pdf
    • https://cdn.shopify.com/s/files/1/0434/7474/7558/files/neat_scanner_driver.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ff5.bin
cbdae376fbb86464b7e84b9acb707c0476976a8e0fd465a05b2a9ece712742f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF5 74088 bytes
font_01_sfnt_off0001f0b7.bin
e7133bbad44d866e5f06501d55ac8e107ac97d3d7dc73fc9b6f0a8e63a748513
pdf-font-stream PDF embedded font (sfnt) at offset 0x1F0B7 5276 bytes
font_02_sfnt_off000202c6.bin
121ce724b766321891013022130edadec1b7ae839bcae6bdb80ad0b771d85226
pdf-font-stream PDF embedded font (sfnt) at offset 0x202C6 16732 bytes
font_03_sfnt_off00023763.bin
fce21d86c2b5faa43a5619d6c859002d414ef8720c10ef6ba746f045f1b0bfa7
pdf-font-stream PDF embedded font (sfnt) at offset 0x23763 16076 bytes