Malicious PDF — malware analysis report

Static analysis result for SHA-256 54c6d9a037dc98a6…

MALICIOUS

PDF

45.6 KB Created: 2020-08-02 19:19:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ea6e70935ee2542e88c9f3892ea1ca4 SHA-1: c5a0a620bd8a57d09ea26d1716e1e46d9331afc9 SHA-256: 54c6d9a037dc98a6eb4ea1431d6d83ab99e6a58e1ec8a9a7463dfa7c57de9b41
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains, likely for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=lemonade+beyonce+torrent'. The document body contains garbled text but also includes the same malicious URL and several benign Shopify URLs, suggesting a lure to trick users into clicking the malicious link. The presence of a 'download button' heuristic further supports this social engineering tactic.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=lemonade+beyonce+torrent
    • http://files.twistedrootswood.com/uploads/1/3/1/4/131407465/jifagomidinura.pdf
    • http://wudix.laurennelsonyoga.com/uploads/1/3/0/7/130738524/a43d23aebefa.pdf
    • http://files.ssjohnpaulfaithformation.org/uploads/1/3/1/6/131607029/difitorufe-kopoxelurerajof.pdf
    • http://files.longheathchurch.org/uploads/1/3/0/7/130739747/9809153.pdf
    • http://files.n2d.shop/uploads/1/3/1/4/131409309/nifejusinatonud-gaxakesup-bojepub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74535711799.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86662201832.pdf
    • https://cdn.shopify.com/s/files/1/0431/8009/7702/files/90684212240.pdf
    • https://cdn.shopify.com/s/files/1/0436/0162/5252/files/femabes.pdf
    • https://cdn.shopify.com/s/files/1/0433/8538/9206/files/cricket_score_sheet_pdf_blank.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/wanagiwowoder.pdf
    • https://cdn.shopify.com/s/files/1/0429/4197/2636/files/riximejot.pdf
    • https://cdn.shopify.com/s/files/1/0429/4197/2636/files/juzogijevavamesubodugas.pdf
    • https://cdn.shopify.com/s/files/1/0430/8910/0957/files/85039472101.pdf
    • https://cdn.shopify.com/s/files/1/0432/4845/1739/files/77673409673.pdf
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/felagevusolemow.pdf
    • https://cdn.shopify.com/s/files/1/0436/0926/0190/files/62292555821.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bce.bin
d1d0dcdbe51722ea99a5e6594c2ed88db5a95da7a66569aa05dfcd717d1705d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BCE 4800 bytes
font_01_sfnt_off00006bf4.bin
6c1d748b08c508da3c90003defff1169bd80641970b74dd781094c87ac531419		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF4 2712 bytes
font_02_sfnt_off0000773e.bin
970a8d4ff7c6dde262224e43ff4b40816625bf9db503cafff06f32bbdcc7e89c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x773E 10476 bytes
font_03_sfnt_off00009b02.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B02 4324 bytes

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