Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed13171f394ed96…

MALICIOUS

PDF

45.4 KB Created: 2020-08-14 20:00:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7dda789386a635197ca9c94f531b2f5 SHA-1: 26f2966b9d41f33225bfa195516b4bc42fce4518 SHA-256: bed13171f394ed969c58c3b37e4d77176a7dfa2d1081e6793b4dd5b43dab825f
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs hosted on Shopify, likely for SEO manipulation to attract users. The document body, though heavily obfuscated, contains the malicious URL and a call-to-action phrase, suggesting a lure to download potentially unwanted or malicious software.

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.com/pify?keyword=vidmate+latest+version+app++2018
    • http://bikanul.nakedroots1.com/uploads/1/3/2/6/132682646/225831.pdf
    • http://files.jeffcolibraries.org/uploads/1/3/1/3/131381612/e283339.pdf
    • http://files.westofirelandwomensminimarathon.com/uploads/1/3/1/4/131406947/nojajejoraxev-xetamug-vivonorinaxuxaj.pdf
    • http://files.computational-psychiatry.com/uploads/1/3/1/0/131070230/3556420.pdf
    • https://cdn.shopify.com/s/files/1/0432/9318/0070/files/fixufalebuwegexegudurugug.pdf
    • https://cdn.shopify.com/s/files/1/0434/5063/0296/files/kepumevuzila.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/bulozigigazipekulaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/jewowagulotu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90067119925.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/98732454291.pdf
    • https://cdn.shopify.com/s/files/1/0431/0325/6737/files/estudio_descriptivo_caracteristicas.pdf
    • https://cdn.shopify.com/s/files/1/0437/6163/1384/files/on_his_blindness_poem_summary.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/81432918635.pdf
    • https://cdn.shopify.com/s/files/1/0429/5091/8310/files/imparfait_ou_passe_compose_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/4184/1571/files/brilliant_green_bile_broth.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/fopopawodepazujug.pdf
    • https://cdn.shopify.com/s/files/1/0431/6243/5739/files/91696244405.pdf
    • https://cdn.shopify.com/s/files/1/0432/4337/2699/files/trivium_ember_to_inferno.pdf
    • https://cdn.shopify.com/s/files/1/0428/9642/5119/files/5018434882.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006673.bin
d8b907802410e675ceca2784509e58a9dae2947c1b2ad43e3e0c02687eabed47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6673 2952 bytes
font_01_sfnt_off00007101.bin
ab4fa7a24d75ef7e0ee2dcf7bd09dab99384cc39ac46d9df1a1c18bbc6b3ebaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7101 5652 bytes
font_02_sfnt_off00008428.bin
e519de9197b27c813e99d84404763afb5023eb92f0b71b41cef5bd6b80d58967		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8428 10516 bytes

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