Malicious PDF — malware analysis report

Static analysis result for SHA-256 b26120613cdd1daf…

MALICIOUS

PDF

46.3 KB Created: 2020-07-28 03:53:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76ab9dd0f2747ec24d06e7fd7f9ff1ee SHA-1: cf00b5b7236573398c7a801b8f1ea27dc45f24ad SHA-256: b26120613cdd1daf8375d8723a3e34264525f2efaeed1d955f28812b3560d138
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, appears to contain metadata related to search terms and file generation, suggesting a lure for SEO-based phishing or spam campaigns. The presence of numerous external PDF links further supports this, indicating an attempt to drive traffic to potentially malicious or ad-filled sites.

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=assateague+surf+fishing+report+2018
    • http://files.devonportanglicanchurch.com/uploads/1/3/0/8/130813991/747015.pdf
    • http://files.sceniccitygolf.com/uploads/1/3/2/3/132303117/a6e58b6dca.pdf
    • http://files.burkittsvilleruritanclub.org/uploads/1/3/1/3/131381693/01b00faf12aa.pdf
    • http://files.surgicallycleanhands.com/uploads/1/3/1/8/131871864/lepudozaxixiri.pdf
    • http://files.thelittlelashroom.co.uk/uploads/1/3/2/7/132710638/tufudeper.pdf
    • https://cdn.shopify.com/s/files/1/0435/3923/4967/files/juvolawefexar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/womonevixaxijebuvi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/40487041578.pdf
    • https://cdn.shopify.com/s/files/1/0430/1789/6089/files/xesasiwepenumilal.pdf
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/79867954441.pdf
    • https://cdn.shopify.com/s/files/1/0435/0925/2250/files/97793453755.pdf
    • https://cdn.shopify.com/s/files/1/0434/8451/2406/files/62880027113.pdf
    • https://cdn.shopify.com/s/files/1/0427/9376/2975/files/62941584871.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdf
    • https://cdn.shopify.com/s/files/1/0432/0398/5570/files/5230466227.pdf
    • https://cdn.shopify.com/s/files/1/0428/9232/9116/files/81954023414.pdf
    • https://cdn.shopify.com/s/files/1/0430/1144/0803/files/tozisenalodutuvuditelu.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_off00007778.bin
582171d4df2ad63085f9e72ff3fce0129278b5a4843f809c0a3574ac2925d4c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7778 5524 bytes
font_01_sfnt_off00008a34.bin
e249a9464dd8a11a754ce9ff58a8ca4af170fe30fc3483a865feb55c257451a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A34 9728 bytes

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