Malicious PDF — malware analysis report

Static analysis result for SHA-256 537f8f60a63c792c…

MALICIOUS

PDF

40.6 KB Created: 2020-08-30 23:19:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 643adc5ee909e03f538948a6369bd91e SHA-1: 83e95eedaf4173204b899fe691b2b9ee6147cfaf SHA-256: 537f8f60a63c792cf48f4133d66fc88272627d81c3274eb0d579569e1cc100ed
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though partially corrupted, contains text related to 'Adobe audition free for windows 7', suggesting a lure to entice users to click the malicious link. The presence of a link farm further supports the malicious intent of redirecting users to potentially harmful sites.

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.com/wix?keyword=adobe+audition+free++for+windows+7
    • https://cdn.shopify.com/s/files/1/0440/0224/6814/files/pictoword_level_160_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/xawamuwebax.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1031/files/noziw.pdf
    • https://cdn.shopify.com/s/files/1/0440/6919/1832/files/makovox.pdf
    • https://cdn.shopify.com/s/files/1/0431/9097/6673/files/zabipekogixuliseseko.pdf
    • https://static.usrfiles.com/ugd/b8c837_99c046e40dcc4af7983cd09e6ce7d7d5.pdf
    • https://static.usrfiles.com/ugd/e6092c_98d1d72a4c2d4d27bf6896bc17360f95.pdf
    • https://static.usrfiles.com/ugd/b8c837_7fa2535818694b81aceba3a3a302fe1d.pdf
    • https://cdn.shopify.com/s/files/1/0448/1482/7677/files/76674637820.pdf
    • https://cdn.shopify.com/s/files/1/0439/2442/2811/files/mukoladopujuliloxakuwo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1996/8417/files/vedematiromakoga.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/kixosedosilefamixejup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0681/1550/files/egyptian_themed_powerpoint_template.pdf
    • https://static.usrfiles.com/ugd/b8c837_495b255cf0bb4d7cac6070c91c4eddff.pdf
    • https://static.usrfiles.com/ugd/538d67_10c62c388a9340868eea18bcca012eb2.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_off0000626f.bin
9f02020b70d1ceaca88c46f331ce9f8e4df3ec429a66276bfcb63a5e64293986		 pdf-font-stream PDF embedded font (sfnt) at offset 0x626F 5172 bytes
font_01_sfnt_off0000742b.bin
b46a8f61cde64dca8f5661718287a1426d2d4b97c54b088f4b18247d34a2a1e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x742B 9836 bytes

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