Malicious PDF — malware analysis report

Static analysis result for SHA-256 d82c323b58440ca7…

MALICIOUS

PDF

43.2 KB Created: 2020-08-15 04:50:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b99b5284ce27e2365a0e18a965b11cc8 SHA-1: 8a7d8cbb746de412ac4d7cae484d464fa40e459d SHA-256: d82c323b58440ca7d339f923da85fe2599addcd56657027bb9d5f4feda10ec64
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which are hosted on Shopify domains but appear to be part of a link farm. One critical heuristic indicates that the PDF links to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains references to movie titles and the authoring application, likely serving as a lure. 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.com/pify?keyword=bicentennial+man+movie
    • http://vanenode.kirtanyogachristchurch.com/uploads/1/3/2/7/132712207/dobegodufixizopi.pdf
    • http://zitozule.nbjmoldassessment.com/uploads/1/3/2/6/132682347/254d3a5b9141.pdf
    • http://files.ccmooresville.com/uploads/1/3/1/3/131381819/tanupip.pdf
    • http://files.mariannephinney.com/uploads/1/3/2/6/132695881/88bd9e25.pdf
    • http://files.sixquickchicks.com.au/uploads/1/3/1/4/131438137/4883920.pdf
    • https://cdn.shopify.com/s/files/1/0432/2285/9944/files/fivenoniresenuterezu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4070/0578/files/gumajetur.pdf
    • https://cdn.shopify.com/s/files/1/0441/2948/4952/files/89376460006.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/89835509035.pdf
    • https://cdn.shopify.com/s/files/1/0435/5522/5763/files/my_autograph_kannada_naa_songs.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/daxiwazitonowe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97072231683.pdf
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/bufamosusizuzataje.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81667611697.pdf
    • https://cdn.shopify.com/s/files/1/0428/4393/0791/files/88267271712.pdf
    • https://cdn.shopify.com/s/files/1/0435/7446/0579/files/election_card_gujarat_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5670/9288/files/58161167895.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/barron_s_gre_latest_edition_2020.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_off00006afa.bin
ba42305c0b631615bc476cb430e3986ba4be9ac66031d030305bb3ad794e7d7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFA 4780 bytes
font_01_sfnt_off00007b25.bin
8920a09a05a3afe7cc75fd466460d568ac428365739f35153d716aaa4a4ae8b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B25 10904 bytes