Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6d8e2720879b0db…

MALICIOUS

PDF

36.4 KB Created: 2020-08-27 19:17:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fadaad7f7125bf18f9c6997286cf518 SHA-1: 14e1446ec2e204138c8361d6dcfb6fb7afa212f8 SHA-256: e6d8e2720879b0db04accbb3d53c627eed197294f097b3f3c24eff867a1a1f3a
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=mb+starfinder+download'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, the PDF was flagged for containing a mass external PDF link farm, with multiple links hosted on Shopify and other domains, suggesting an attempt to obscure the malicious destination or engage in SEO manipulation for distribution. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence for a phishing or malware distribution attack pattern.

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=mb+starfinder+download
    • http://files.oakwoodvethospital.com/uploads/1/3/0/8/130814110/22d6c10bbdb57.pdf
    • http://jijixi.dslvnjny.com/uploads/1/3/0/9/130968973/b5d551f84f172.pdf
    • http://files.convictedmerch.com/uploads/1/3/2/6/132683484/xulozoge-barameri.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/solidworks_tutorial_3.pdf
    • https://cdn.shopify.com/s/files/1/0434/0645/9032/files/chogada_tara_garba_dance.pdf
    • https://cdn.shopify.com/s/files/1/0464/5178/5896/files/mitosis_karyokinesis_nuclear_division_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/0982/7231/files/last_time_a_lobotomy_was_performed.pdf
    • https://cdn.shopify.com/s/files/1/0432/5025/3992/files/does_kindle_read.pdf
    • https://cdn.shopify.com/s/files/1/0433/7801/6421/files/jacoco_default_report_location.pdf
    • https://cdn.shopify.com/s/files/1/0428/8865/9100/files/contenidos_factuales_conceptuales_procedimentales_y_actitudinales.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_off000047d6.bin
61713fb6c0a8517c0a403199cba85f7b59feb1e5afab20f4744c630430e84e1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47D6 5140 bytes
font_01_sfnt_off00005970.bin
e7c79b6348d94fc1d23f05598b42272c4953edf0341dc2aec0a8430d6a177ad9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5970 15692 bytes

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