Malicious PDF — malware analysis report

Static analysis result for SHA-256 10075082c9f020b7…

MALICIOUS

PDF

69.9 KB Created: 2020-08-01 12:50:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ca8f0f4ac8ccaed058ac3cb0660735e SHA-1: a62241a036038cddf3dd5caa9384ec9537ab75ce SHA-256: 10075082c9f020b77b85b95ac04b0a53eb50afc1fcb9a42fb6cdda6a053e5975
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, which is likely intended to deliver a malicious payload. The document body, though heavily obfuscated, contains text related to 'Slacker radio premium apk', suggesting a lure to download potentially unwanted software. The presence of numerous external PDF links further indicates a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=slacker+radio+premium+apk
    • http://files.larryssportsexchange.com/uploads/1/3/0/8/130874128/folerezome.pdf
    • http://files.joemedinaconsulting.com/uploads/1/3/1/4/131453733/lodib.pdf
    • http://files.michaeljcleveland.com/uploads/1/3/0/7/130739012/badoxediju-dilekulowo-jotuxu-puvakef.pdf
    • http://files.thecovenantschristandyou.com/uploads/1/3/1/3/131379434/94345039.pdf
    • http://files.suzannewilliamson.net/uploads/1/3/1/4/131407111/3141609.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/4365/1741/files/nodutowoniwemovaxodorazu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2569/3845/files/lexorutajugoxaforukutarit.pdf
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/21311228008.pdf
    • https://cdn.shopify.com/s/files/1/0433/9433/4869/files/10847278054.pdf
    • https://cdn.shopify.com/s/files/1/0428/6310/0070/files/zoxerebimabas.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/25489486320.pdf
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/96064865168.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/27411579828.pdf
    • https://cdn.shopify.com/s/files/1/0440/6598/0581/files/padirisimigerudugo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8107/1782/files/lisokuxajam.pdf
    • https://cdn.shopify.com/s/files/1/0438/0455/7472/files/lokerewisojasijadome.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a161.bin
4cc69df47b15f98b4efa3bd9100adc847836b72b428e1a2bbf65ed92140659c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA161 5208 bytes
font_01_sfnt_off0000b300.bin
44669dc86472f314d963ad12531de79606e8ee5ea0d6c501c97b6ad9f4b03d6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB300 4040 bytes
font_02_sfnt_off0000c337.bin
f3d4f507ae4cefba899bc6a7fd798694a1508c7c9a1a6d2ee47133d8dd21c23d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC337 15184 bytes
font_03_sfnt_off0000f2ab.bin
10a2611bbb585209e0840e6242ff4352e56f27e319aa3284be673d342ee1a3e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AB 16812 bytes

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