Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e4206e69fb4135…

MALICIOUS

PDF

44.5 KB Created: 2020-08-22 12:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a406b96072ea6745b193e33f7e850c4e SHA-1: a03efbd34e7737ebd3c5b7ddbf42af80c101e88d SHA-256: 29e4206e69fb413560dfd7dacbe60e6ad2bcd1e9b2cbeffc037ec0dc5d31fbc1
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=blackberry+work+android+signature'. Additionally, it features a PDF link farm heuristic, indicating a large number of external links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs suggest a lure related to Blackberry work signatures, likely intended to trick users into visiting the malicious redirector.

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.cc/pify?keyword=blackberry+work+android+signature
    • http://files.polishfire.com/uploads/1/3/1/4/131406140/6299777.pdf
    • http://guwonor.calmundertension.com/uploads/1/3/1/6/131607712/2696065.pdf
    • http://files.plainfieldspanish.com/uploads/1/3/0/8/130874394/1361898.pdf
    • http://files.algonacwrestling.org/uploads/1/3/0/7/130738531/505431.pdf
    • https://cdn.shopify.com/s/files/1/0432/5461/2123/files/23852526490.pdf
    • https://cdn.shopify.com/s/files/1/0438/1245/4557/files/dekerawodaribizi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2926/5574/files/xukudakowisax.pdf
    • https://cdn.shopify.com/s/files/1/0433/5858/4986/files/fight_night_pc.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6919/files/50932115971.pdf
    • https://cdn.shopify.com/s/files/1/0429/7103/7855/files/pfsense_captive_portal_template_2018.pdf
    • https://cdn.shopify.com/s/files/1/0428/7224/2342/files/dominio_archaea_definicion_caracteristicas.pdf
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/juzagekupakavewadefo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/72032254018.pdf
    • https://cdn.shopify.com/s/files/1/0437/5481/5640/files/50306505449.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_off00006e2d.bin
6fd14f7175afbcc8c2a2d9fd094a80bbdc07625f9616fe780ad0d7a7345be91c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2D 5552 bytes
font_01_sfnt_off00008137.bin
69088946269bb45be6bdfe4eeb900086ccf151e3de7b4122e77a32a8ce6ce610		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8137 10580 bytes

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