Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf986816c418d231…

MALICIOUS

PDF

52.3 KB Created: 2020-07-30 13:18:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a345d4788f8f434794c428d90f889de SHA-1: ea44fd80a9b751396fb12e46038e35bf65c992fa SHA-256: bf986816c418d23128a2d1066e11d14d6096ef92d83bb6dcf2da585b02dd3aca
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'Enfermedades del cultivo de arveja pdf'. The presence of a link farm indicates an attempt to distribute malicious content or phishing pages. 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/pify?keyword=enfermedades+del+cultivo+de+arveja+pdf
    • http://files.joynesphotography.com/uploads/1/3/2/7/132741181/179067.pdf
    • http://files.waltpadgett.com/uploads/1/3/0/9/130969904/fomebapinolugipo.pdf
    • http://files.greencrossproject.org/uploads/1/3/0/7/130776158/c28b12b298.pdf
    • http://files.mrshulburd.com/uploads/1/3/1/3/131379940/2027616.pdf
    • http://files.rowseyforthehouse.com/uploads/1/3/0/9/130969999/vagotavuretukuduj.pdf
    • http://files.mrshulburd.com/upload
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/zavadedaxatitaro.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/vejidikexenoka.pdf
    • https://cdn.shopify.com/s/files/1/0435/5814/2120/files/vinepelekib.pdf
    • https://cdn.shopify.com/s/files/1/0430/3847/4397/files/28739987533.pdf
    • https://cdn.shopify.com/s/files/1/0435/7344/4767/files/67524877575.pdf
    • https://cdn.shopify.com/s/files/1/0429/2254/1209/files/97769695822.pdf
    • https://cdn.shopify.com/s/files/1/0439/2707/7032/files/nuwegimimifugexa.pdf
    • https://cdn.shopify.com/s/files/1/0433/5743/8101/files/77696081590.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/99366095498.pdf
    • https://cdn.shopify.com/s/files/1/0438/3087/0173/files/sorimakofapow.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_off00008e92.bin
7d777939fa9b249f6f14e948029648af877aafb564cb800bf4fb69237a02e5d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E92 5276 bytes
font_01_sfnt_off0000a070.bin
ca487f151db3c520ceb0d2474a622156945659a3a9c8ee59b30c4b4002bacbd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA070 10948 bytes

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