Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a7d76eac2360e4e…

MALICIOUS

PDF

40.3 KB Created: 2020-09-02 17:40:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76136dfb40ede1082369c00a79f36a4d SHA-1: 6cbdbb065c607ddcbbb3bc48465b061cb1cc9657 SHA-256: 8a7d76eac2360e4e6eda87cef0580e8c3383c8cef14f4f50c4a2c3c70d65f040
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to a URL designed to lure users with a search query for 'psychoeducation manual for bipolar disorder pdf'. The document body also contains this URL and numerous other links hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is https://ttraff.me/wix?keyword=psychoeducation+manual+for+bipolar+disorder+pdf, which is likely used to redirect users to a malicious site.

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.me/wix?keyword=psychoeducation+manual+for+bipolar+disorder+pdf
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/jawasetezexesifezi.pdf
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/vunojolomusigumewemibawa.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/enoxaparin_renal_dosing_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0436/2246/5699/files/morudutop.pdf
    • https://cdn.shopify.com/s/files/1/0434/9932/3558/files/47639784765.pdf
    • https://cdn.shopify.com/s/files/1/0461/9472/0931/files/pagozuvabidusalisesida.pdf
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/59216670571.pdf
    • https://cdn.shopify.com/s/files/1/0431/0728/7206/files/rezef.pdf
    • https://cdn.shopify.com/s/files/1/0461/4186/6137/files/gseb_class_10_science_question_paper_2018.pdf
    • https://cdn.shopify.com/s/files/1/0431/4421/6730/files/biology_campbell_11th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/6860/5095/files/lyman_shotshell_reloading_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/19071469374.pdf
    • https://cdn.shopify.com/s/files/1/0431/6410/6901/files/taimanin_asagi_game.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7570/files/life_cycle_of_hymenolepis_nana.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_off00005fab.bin
67f9c8029287ae4cec62a12c43b41bd1b654707802a0f17891e5a79069bab23e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAB 5640 bytes
font_01_sfnt_off000072af.bin
1962a8ab3481ae02a115145c48f1116a088db28db878c4491493ffeb9e66a6e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72AF 9756 bytes

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