Malicious PDF — malware analysis report

Static analysis result for SHA-256 3df6418b3692be83…

MALICIOUS

PDF

41.4 KB Created: 2020-08-11 02:17:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b2abbd4b8a94b8ce72abc094fabf974 SHA-1: e3c3293c7e89facd5ad23a7638ea39e970010b43 SHA-256: 3df6418b3692be8379429a8e9ef46c9e83ca655dbe720c02cbc3a1797973ae54
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a mass of external links, many of which are designed to appear as legitimate PDF downloads. One of these links, 'https://ttraff.com/pify?keyword=analog+and+digital+multimeter+pdf', is identified as a malicious redirector. This suggests the document's primary purpose is to trick users into visiting malicious websites by disguising them as PDF resources.

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.com/pify?keyword=analog+and+digital+multimeter+pdf
    • http://vuworob.jeroenkoevoets.com/uploads/1/3/1/3/131383483/654fbc4f28cf.pdf
    • http://fijofa.hanisthegroomer.com/uploads/1/3/2/8/132814930/sekazigesekid.pdf
    • http://files.colinguthrieking.org/uploads/1/3/1/1/131164456/wazinudizetepuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nulanevu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/vunifalagi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/activities_for_halloween_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0439/4650/8456/files/63_country_code.pdf
    • https://cdn.shopify.com/s/files/1/0432/8256/3232/files/black_law_dictionary_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1578/files/10330724951.pdf
    • https://cdn.shopify.com/s/files/1/0433/4341/3407/files/all_about_me_questions_high_school.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5708/files/junegabitidizokarudofiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4978/files/52175869387.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/75887564082.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_off000065a5.bin
7109d08e0e2a6167213a62e8c92c274ad0fcaa224ecd1a569618fbb9a98e75d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A5 5172 bytes
font_01_sfnt_off00007725.bin
17338989061a9b3f69c90bf8687dd564ea9c2525769bde290823271c0dddc369		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7725 9972 bytes

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