Malicious PDF — malware analysis report

Static analysis result for SHA-256 b13b978a87626b12…

MALICIOUS

PDF

49.6 KB Created: 2020-08-30 09:57:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ab5eed1f832e804640ee5a7a2641440 SHA-1: f961e1e477098f3be87146164d1f8ce30866e03b SHA-256: b13b978a87626b12e5fa29d7684ac02b0dcc92aaf06593dbbedcc8cf2ad9728b
120 Risk Score

Malware Insights

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

The PDF file contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to creating an Access 2010 database, suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a potential link farm or SEO manipulation tactic to distribute the malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=pasos+para+crear+una+base+de+datos+en+access+2010
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/wejujazidevilizaris.pdf
    • https://cdn.shopify.com/s/files/1/0430/2507/2282/files/ponori.pdf
    • https://cdn.shopify.com/s/files/1/0428/7460/1635/files/kenwood_ts-_120s_mods.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2906/files/89019152754.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0427/files/kepowapiko.pdf
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/athiran_full_movie_tamilrockers.pdf
    • https://cdn.shopify.com/s/files/1/0438/0708/0608/files/vapitomalawiboneso.pdf
    • https://cdn.shopify.com/s/files/1/0432/4353/6541/files/libuwizirapuvijegeboj.pdf
    • https://static.usrfiles.com/ugd/74e905_2832ba387e6945f0bfce50c632de4657.pdf
    • https://static.usrfiles.com/ugd/e4a001_c705a41010ae411288e14f2cc793bf68.pdf
    • https://cdn.shopify.com/s/files/1/0434/4093/0968/files/jevebizuturupofopikuxiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/0577/9863/files/60544714543.pdf
    • https://cdn.shopify.com/s/files/1/0431/0115/9575/files/aarc_clinical_practice_guidelines_mechanical_ventilation.pdf
    • https://cdn.shopify.com/s/files/1/0445/6411/9716/files/aphasia_worksheets.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/
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/athi

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00009a56.bin
71cbfb385416c2f172079ee4f0911e0c1c42bb762f22886535ebca7c2b48351d
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9A56 18216 bytes
font_00_sfnt_off00006412.bin
205183a4a0184f83c749ea9cc86d72e9f88cf222046569c64d09cd7c33a99fad
pdf-font-stream PDF embedded font (sfnt) at offset 0x6412 5504 bytes
font_01_sfnt_off000076d0.bin
86a1d4d5fdbfdd52513a61490de076c9c580ddcf40f4686892c3502c81823149
pdf-font-stream PDF embedded font (sfnt) at offset 0x76D0 10892 bytes