Malicious PDF — malware analysis report

Static analysis result for SHA-256 97546467a5d13c54…

MALICIOUS

PDF

37.7 KB Created: 2020-08-31 03:26:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 469d711aa48d6faa2a223dba9d662ed1 SHA-1: 8a729be237135bea698bd8525fc21f911e5f4061 SHA-256: 97546467a5d13c5448a1c0605243635b3593c37949d1cb8a909314e2ad273560
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the malicious URL and references to other PDFs, suggesting a lure to external content. The presence of a 'download button' heuristic further supports the social engineering aspect of this attack.

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.cc/wix?keyword=secret+rhonda+byrne+ebook
    • https://cdn.shopify.com/s/files/1/0433/9869/3022/files/hyundai_elantra_2020_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/3d_shapes_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9714/6019/files/55324962516.pdf
    • https://cdn.shopify.com/s/files/1/0433/5163/8175/files/10637370834.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/64074192438.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/3715209745.pdf
    • https://cdn.shopify.com/s/files/1/0432/0909/7384/files/zoxisotebifewabujewoze.pdf
    • https://cdn.shopify.com/s/files/1/0457/6775/3894/files/bounce_dryer_sheets_for_pet_hair.pdf
    • https://cdn.shopify.com/s/files/1/0431/8878/1219/files/barden_bearings.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e95fec18a414b6698e1d9e79c1d23d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_22a7c7319b0e456a8a00843f11f10d95.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_off000056ec.bin
5ef3192da5bbd816ad705471fb4564410659b9fe3ffb97f38e899c07ef0efac7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56EC 5228 bytes
font_01_sfnt_off000068a4.bin
9f96a22e34a2d6a81e0deb4504b968de988fc9b8634f1af65125000c9ff9a4e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68A4 9836 bytes

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