Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ac8fdc1866b9672…

MALICIOUS

PDF

49.4 KB Created: 2020-08-10 16:13:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 034c35df9b1327ebed4c7444e80ffa89 SHA-1: ef539275ff7367d04ebe9ef2a228e0248c881173 SHA-256: 3ac8fdc1866b9672edd18d7541ea4538181d72591fe5ce26f523f464df63f8da
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body text, though garbled, includes the phrase 'play it again sports application pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous PDF links and a malicious redirector indicates a likely phishing or scam attempt.

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/wb?keyword=play%20it%20again%20sports%20application%20pdf
    • http://files.wilkietours.com/uploads/1/3/1/4/131409200/33d3f4.pdf
    • http://molulid.shebeastillustration.com/uploads/1/3/0/8/130874304/sibomunov_kevuve_gibuwi_vebuke.pdf
    • http://files.stonevalleyarts.org/uploads/1/3/1/0/131070160/buwibaru-jupuzeg-dagomeluwa.pdf
    • http://files.wayofthemaster.ca/uploads/1/3/1/6/131637307/1116762.pdf
    • https://cdn.shopify.com/s/files/1/0438/3699/7792/files/no_label_2.pdf
    • https://cdn.shopify.com/s/files/1/0430/3519/7602/files/wudulezilumegidixokaxi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2153/1293/files/elementary_probability_examples.pdf
    • https://cdn.shopify.com/s/files/1/0431/7095/5415/files/82726717632.pdf
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/22861023339.pdf
    • https://cdn.shopify.com/s/files/1/0429/2755/4723/files/41870975764.pdf
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/rowibopefuliwixepikemulow.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5126/files/nunidukejepasikalefevo.pdf
    • https://cdn.shopify.com/s/files/1/0439/4457/5131/files/7th_grade_math_benchmark_test.pdf
    • https://cdn.shopify.com/s/files/1/0429/8178/5753/files/advances_in_structural_adhesive_bonding.pdf
    • https://cdn.shopify.com/s/files/1/0428/1057/2966/files/bewogerobulev.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_off000081fe.bin
96e0f350b165d5c266a7d7a41b599d39ef965f613f270275474bf2e21df77028		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81FE 5428 bytes
font_01_sfnt_off0000947e.bin
4ae559b3aedfa4e90523a0712a76e2719b317df89270c62105c45d328f592868		 pdf-font-stream PDF embedded font (sfnt) at offset 0x947E 10568 bytes

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