Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fd8780b80f705d6…

MALICIOUS

PDF

38.9 KB Created: 2020-08-05 03:17:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aeef696ebbc200d9d1895503099e2abb SHA-1: 33d341af9f466a6ebdff6e0f31c9400f66474dc4 SHA-256: 9fd8780b80f705d6f0d7f7d0295615a74eaaa76cea6aee809cebb5e35b433ab0
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=basic+life+support+manual+american+heart+association+pdf', suggesting a lure to a malicious site disguised as a manual. The presence of numerous shopify.com links indicates an attempt to blend malicious links with seemingly benign content.

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/pify?keyword=basic+life+support+manual+american+heart+association+pdf
    • http://files.pacofalco.com/uploads/1/3/1/3/131378993/2612726.pdf
    • http://files.powderkegfarms.com/uploads/1/3/0/7/130776728/9b3c3d1b74.pdf
    • http://files.debbiekirstein.com/uploads/1/3/2/7/132740270/zikaxokuwibegilumi.pdf
    • http://files.elfiesrefuge.net/uploads/1/3/0/7/130740073/66bf30.pdf
    • http://files.drawntohumor.com/uploads/1/3/1/4/131454373/78b9681e06d.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/ziwufarepibavazivure.pdf
    • https://cdn.shopify.com/s/files/1/0433/8201/4108/files/jadugofiwo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4809/8209/files/logan_lathe_parts.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7108/files/15440682175.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51031200676.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/60124786440.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0865/files/how_to_resize_an_image_in_illustrator.pdf
    • https://cdn.shopify.com/s/files/1/0438/6694/7744/files/amelie_comptine_d_un_autre_t_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/60075808946.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/52601031656.pdf
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/naguzevoxelepozi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7108/6492/files/jirevegutuvezifef.pdf
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/eliseu_martins.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/
    • https://cdn.shopify.com/s/files/1/0428/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058d3.bin
9ef00892d745b312dd85fd54d8bba6991a547ff017d6767e8572dd21338e6f47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58D3 5444 bytes
font_01_sfnt_off00006b29.bin
46444e0ffc56f42757bfbcee7c86d2d4f63fa7e4a899ff4bd31cdce68c2287e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B29 10300 bytes

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