Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc76cdd0e47a9f8a…

MALICIOUS

PDF

36.9 KB Created: 2020-08-09 07:23:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7556e459de03ab5e0e380555a96ac8a7 SHA-1: 9a7540d6a9c8d0181b52b93acfb0f01cc28c57d8 SHA-256: cc76cdd0e47a9f8a0ce7d27e9c8f9f3ec2b154d56711fe62c8325755ec4dc68f
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to this redirector. The primary purpose appears to be directing the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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=cancion+del+mariachi+guitar+pdf
    • http://files.amymengphotography.com/uploads/1/3/0/9/130969254/8654118.pdf
    • http://firitu.hatzbythesea.com/uploads/1/3/0/7/130739564/gogiwusitosaj.pdf
    • http://bepifowu.jillhunteclecticart.com/uploads/1/3/1/4/131437657/156e80.pdf
    • http://files.asechrestspencer.com/uploads/1/3/1/3/131383429/nuzemeropozisib.pdf
    • http://files.amhcsas.org/uploads/1/3/1/4/131482975/gifipuj_bovefepug.pdf
    • https://cdn.shopify.com/s/files/1/0430/9132/9173/files/93303702686.pdf
    • https://cdn.shopify.com/s/files/1/0440/7951/3752/files/bugisoxibofemakigudix.pdf
    • https://cdn.shopify.com/s/files/1/0439/4346/1032/files/sowiladumivogut.pdf
    • https://cdn.shopify.com/s/files/1/0432/0369/0660/files/youth_bible_study_lessons.pdf
    • https://cdn.shopify.com/s/files/1/0438/5410/2688/files/ferogazofoxesazebiji.pdf
    • https://cdn.shopify.com/s/files/1/0434/9237/6741/files/lukokubupokaropefakir.pdf
    • https://cdn.shopify.com/s/files/1/0435/0532/0088/files/crafting_training_runescape.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/30402921090.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/25467626611.pdf
    • https://cdn.shopify.com/s/files/1/0434/0783/5303/files/32594640646.pdf
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/rectangular_waveguide_derivation.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_off00004a6b.bin
3e05eb0966397d895a76a063f2068a2ccb2232bdfa29724a2dc6ac2eaddd2fde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A6B 5296 bytes
font_01_sfnt_off00005c41.bin
1f49d07cee2a7d56663eda347cb816621fb3f685287ff5bbcfe0de3f237e4f79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C41 12952 bytes

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