Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c80ce451ec0aff…

MALICIOUS

PDF

40.4 KB Created: 2020-08-24 15:42:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8091512fd693c76c3a785c5e218e593 SHA-1: e81146a2ebe114af888885e7e1a10b7047e013dc SHA-256: f0c80ce451ec0affed272e87de4742c60d057e79d1795c14b51e769463dffa3d
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the same as the one identified by the heuristic. The presence of numerous external PDF links, many pointing to Shopify, suggests a link farm or SEO manipulation tactic to obscure the malicious destination. No scripts were extracted from this sample.

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=integrated+reporting+awards+in+sri+lanka
    • http://files.davisworldstudies.com/uploads/1/3/1/8/131856706/jizaxuzozozaza_didavitar_jedidu_poxepodefag.pdf
    • http://files.govmation.net/uploads/1/3/1/1/131163777/5123569.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/freaks_geeks_and_asperger_syndrome.pdf
    • https://cdn.shopify.com/s/files/1/0435/1400/3610/files/bollard_pull_calculation.pdf
    • https://cdn.shopify.com/s/files/1/0435/4116/8283/files/68154275726.pdf
    • https://cdn.shopify.com/s/files/1/0430/0272/4506/files/27929526079.pdf
    • https://cdn.shopify.com/s/files/1/0434/9257/3334/files/8288378552.pdf
    • https://cdn.shopify.com/s/files/1/0464/3337/0264/files/dads_worksheets_division_word_problems.pdf
    • https://cdn.shopify.com/s/files/1/0435/8671/5805/files/high_hopes_kodaline_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86372263330.pdf
    • https://cdn.shopify.com/s/files/1/0432/1175/1588/files/71560889230.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_off00006052.bin
e70a8db4aee5efc2b05fdfb4358e2854e5227074be8ea1b5db05d206e49a68a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6052 5220 bytes
font_01_sfnt_off0000722f.bin
a389941459c5e5cf3b02c15ea38a0731b0d6ccb30881e2b88b4fcdc39d23124c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x722F 10180 bytes

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