Malicious PDF — malware analysis report

Static analysis result for SHA-256 f003cc3bb8fc0210…

MALICIOUS

PDF

53.6 KB Created: 2020-08-06 01:33:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb3760f9c4180c57906176ca6dea4675 SHA-1: 08daab6b2784beb8ebe6eb17d9705ca610ae0d9a SHA-256: f003cc3bb8fc0210c9f4b113d2d4b3faf4a0cfc0c5bf92701ae443f3a412e312
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a lure related to 'wastewater management introduction pdf'. The document body, though heavily obfuscated, contains this same URL, confirming its malicious intent. The presence of many links to Shopify domains suggests an attempt to blend in with legitimate content while directing users to malicious infrastructure.

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.ru/pify?keyword=wastewater+management+introduction+pdf
    • http://files.plumbcogroup.com/uploads/1/3/2/6/132681812/rolikesupog-sepasufedabuna.pdf
    • http://files.erp-selection.org/uploads/1/3/2/3/132302780/momigogogimujosise.pdf
    • http://files.riveredgeschoolsreach.com/uploads/1/3/0/7/130776015/1486557.pdf
    • http://files.hallelujah-lighting.com/uploads/1/3/0/9/130969160/gefepolejenimel.pdf
    • http://files.thesockmafia.com/uploads/1/3/1/3/131383621/57bd41a51628.pdf
    • https://cdn.shopify.com/s/files/1/0435/3386/1018/files/math_machine_learning.pdf
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/38805311403.pdf
    • https://cdn.shopify.com/s/files/1/0437/1942/6198/files/pejanodelusetodajep.pdf
    • https://cdn.shopify.com/s/files/1/0432/3531/1775/files/jewifisom.pdf
    • https://cdn.shopify.com/s/files/1/0431/2530/9601/files/8553934383.pdf
    • https://cdn.shopify.com/s/files/1/0434/6281/9990/files/37257465750.pdf
    • https://cdn.shopify.com/s/files/1/0433/8706/0375/files/raxebirunowat.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gubiwunezekubukezo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0654/9406/files/51030202678.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/josegegunasurawefetara.pdf
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/jalipolipifefesatuxo.pdf
    • https://cdn.shopify.com/s/files/1/0440/0106/7166/files/rewodukusafupi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7789/4293/files/dizositiw.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/
    • https://cdn.shopify.com/s/files/1/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000921f.bin
2dc118ab5485f2045850ff5b11a56d1504d9ca438273928c2b65eefba76f694c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x921F 5548 bytes
font_01_sfnt_off0000a505.bin
d4e81b98279ba67421fe14f901d7482200e7f296e668270c8a8ab9917815c3dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA505 10648 bytes

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