Malicious PDF — malware analysis report

Static analysis result for SHA-256 afb7071dd8e0df93…

MALICIOUS

PDF

103.4 KB Created: 2020-07-30 08:46:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc8092a283b764a4868a4e91b677760f SHA-1: 7395970c6aec87b3e64614e621cd1f9a9b630496 SHA-256: afb7071dd8e0df93d92d088d7b2e6fb183c9f13af6b8998a33d09569cc4b3fb5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'Ccna pdf notes with practical download'. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to manipulate search engine results and drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=ccna+pdf+notes+with+practical+download
    • http://files.richardmacwee.com/uploads/1/3/2/6/132695887/pejifugewenera_romovisowat_xupup_rufujefitukujap.pdf
    • http://files.ftcroboticsedina.com/uploads/1/3/2/6/132696465/5510022.pdf
    • http://files.ambatilab.com/uploads/1/3/0/8/130874039/d6f728faf.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/mapudanini.pdf
    • https://cdn.shopify.com/s/files/1/0435/5263/7091/files/dofejejusuxibifare.pdf
    • https://cdn.shopify.com/s/files/1/0432/9557/2126/files/ketemof.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/85046548989.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21086069096.pdf
    • https://cdn.shopify.com/s/files/1/0437/6389/2376/files/92404472651.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/gimugidapagudigadavudid.pdf
    • https://cdn.shopify.com/s/files/1/0437/2430/8630/files/fubogumofezaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/guravikizoborarevema.pdf
    • https://cdn.shopify.com/s/files/1/0433/7182/3262/files/gerururuwixi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0980/1365/files/tuwasijebamowiris.pdf
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/60412461081.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/tewebisubozudedit.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014442.bin
a8640cb23b15ac802f89dd0648c07b7ad030d8b62c5f78624c3814794ace58c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14442 1684 bytes
font_01_sfnt_off00014ca6.bin
abe997499c0fdb7cd5579e1c7e39a84d3e1eb45122fccd3f7742ca645937602d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14CA6 5148 bytes
font_02_sfnt_off00015e2a.bin
c71f6235f5773d0dbe86670183a5eb8ecf4b2354f23d923038435ceb0d4c1340		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15E2A 15896 bytes

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