Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3f0138b47660dcb…

MALICIOUS

PDF

43.8 KB Created: 2020-08-19 00:01:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 715fa829965498bd4b8c85281fb80ff0 SHA-1: c5d3a64ede9e52054debf9af3011b65e2ca07b41 SHA-256: c3f0138b47660dcbbec32460b911a98b5c6501cdbffc2fefc11bc22aa1e0b339
120 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 document body, though partially obfuscated, contains text related to 'Arizona a4 form help' and includes the malicious URL. This suggests a phishing attempt to redirect users to malicious infrastructure. No scripts were extracted from this sample.

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=arizona+a4+form+help
    • http://files.acechr.ca/uploads/1/3/1/4/131411411/dinotu.pdf
    • http://files.lisasturm.com/uploads/1/3/0/8/130874612/negiligag-welibugusug-fezudagelavibel.pdf
    • http://saninokum.mgacra.org/uploads/1/3/2/7/132740249/rinepib_mowazeperorim.pdf
    • https://cdn.shopify.com/s/files/1/0434/5046/6464/files/self_assessment_employee_self_appraisal_answers_examples.pdf
    • https://cdn.shopify.com/s/files/1/0433/0533/6985/files/adobe_acrobat_reader_dc_word.pdf
    • https://cdn.shopify.com/s/files/1/0433/4767/3253/files/lonunube.pdf
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/free_building_brick_wall_powerpoint_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/61016882868.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7218161301.pdf
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/salesforce_stock_performance.pdf
    • https://cdn.shopify.com/s/files/1/0432/5382/5704/files/25192576548.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/1974700560.pdf
    • https://cdn.shopify.com/s/files/1/0437/7339/5106/files/dungeon_siege_2_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0434/0842/5123/files/autocad_2017_to_dwg_conversion.pdf
    • https://cdn.shopify.com/s/files/1/0430/7809/0901/files/dukodifesenopitapegerewe.pdf
    • https://cdn.shopify.com/s/files/1/0434/9935/6324/files/47213762002.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_off000063d3.bin
675a433cbd7c269fe4603a59c39983d973108ee4775a3ca9f0b253183e570a10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63D3 5088 bytes
font_01_sfnt_off00007501.bin
01163d3ed5bb8470d1db01979ab6af36368a17b7c85d9477d149ab3e11144ced		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7501 14668 bytes

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