Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fda4ec1b7857dcd…

MALICIOUS

PDF

44.8 KB Created: 2020-08-18 16:46:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06919c4e81a22c9f9b7b12ad64620761 SHA-1: f0c9ed66c75a8fa3ab0b4ca4da2eaaa688a76ba3 SHA-256: 2fda4ec1b7857dcd2b116b8e9054f2c7c8758f14c4bdac293c833189a07d79fc
150 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=irlz44n+datasheet+pdf', suggesting a lure to download further content. The presence of a PDF link farm further supports the malicious intent of redirecting users to external resources.

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=irlz44n+datasheet+pdf
    • http://venovu.rickmolloyart.com/uploads/1/3/1/3/131384536/2759385.pdf
    • http://files.onlykingsnavigatemusic.com/uploads/1/3/0/8/130874655/likonoxoze_birotewir.pdf
    • http://dobasagaj.compassionatepathways.org/uploads/1/3/2/6/132680863/9fe20ebaadf6891.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bararilisubolubudikolumo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9487/files/34883523716.pdf
    • https://cdn.shopify.com/s/files/1/0437/7565/6097/files/30884180042.pdf
    • https://cdn.shopify.com/s/files/1/0435/8995/9843/files/69664843786.pdf
    • https://cdn.shopify.com/s/files/1/0434/5282/5767/files/12706337345.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/99832647644.pdf
    • https://cdn.shopify.com/s/files/1/0437/0422/1849/files/ffxiv_damage_meter.pdf
    • https://cdn.shopify.com/s/files/1/0431/5414/5444/files/kibibodorapiradapa.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/90873591903.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0245/files/3275414595.pdf
    • https://cdn.shopify.com/s/files/1/0432/1542/1599/files/wotamozomerujekasib.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c7c.bin
d3c1c1b07005c019c6ccf68d693ff65f6a5d7a58538b5e285a5041888e63fa45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7C 5204 bytes
font_01_sfnt_off00007e2e.bin
a5d5592022d3899f0c952315a3934b66ad01c8faad997a221e03e5d14bc0ff8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2E 12588 bytes

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