Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e0a797d5f3694f…

MALICIOUS

PDF

46.0 KB Created: 2020-08-06 14:29:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 276a1aab38f712c836b9ccd2014b4506 SHA-1: dcb41eef42595cb7c0fd7076e945dbfdff339200 SHA-256: 00e0a797d5f3694f897168d43e57c832bd266f2daf239386b9772d46ac6ec91b
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lead the user to a harmful site. The document body, though heavily obfuscated, also contains the same malicious URL and numerous other URLs hosted on Shopify, suggesting a link farm or redirection scheme. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=baking+soda+and+vinegar+experiment+pdf
    • http://files.homesweethomemusiclessons.com/uploads/1/3/0/8/130813095/f849e2.pdf
    • http://files.domyarnell.com/uploads/1/3/0/9/130969944/11e6050909584d9.pdf
    • http://files.ctram.net/uploads/1/3/0/9/130969308/607108e644798e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/wodoferino.pdf
    • https://cdn.shopify.com/s/files/1/0431/5083/5876/files/nekubuxup.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6250/files/kalad.pdf
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/29694421210.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0924/files/vedic_palmistry.pdf
    • https://cdn.shopify.com/s/files/1/0429/1634/8071/files/railway_psychological_test_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/darisa.pdf
    • https://cdn.shopify.com/s/files/1/0436/0486/9277/files/jozubitaxijiwilegududixiz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/wikedexoke.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/is_study._com_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/bakolidologan.pdf
    • https://cdn.shopify.com/s/files/1/0437/8905/8206/files/surelisanumulej.pdf
    • https://cdn.shopify.com/s/files/1/0433/6700/6364/files/95042780596.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000685d.bin
241673ab3ffc596e1440c0ea04200b3331b7e4b4f3ac3a0a0fef602eb432f38d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x685D 5356 bytes
font_01_sfnt_off00007a88.bin
d03585e16b5e42a2abff07101f552bd79e3d8bf98e20a22de24478d88dd9a862		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A88 10060 bytes
font_02_sfnt_off00009cf2.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF2 4324 bytes

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