Malicious PDF — malware analysis report

Static analysis result for SHA-256 4854858cd1a76c03…

MALICIOUS

PDF

51.9 KB Created: 2020-08-12 04:42:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5874e8a40b2f688274337d98a8082b67 SHA-1: 9d06b6de595a3e49a5a7a9faa097bfc7906ed268 SHA-256: 4854858cd1a76c03af6947baaa9c91bf5f5c5a30747ce29761827b0d489cf624
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL. This suggests the primary intent is to redirect the user to a malicious site, likely for phishing or malware distribution. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK strongly supports this conclusion.

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=elementos+de+la+administracion+publica+en+guatemala+pdf
    • http://zetumug.montaukcandleco.com/uploads/1/3/1/4/131406436/moxofusivedusik.pdf
    • http://files.quietlegend.com/uploads/1/3/2/6/132695633/40a14b0ff7da3.pdf
    • http://files.joshualively.com/uploads/1/3/0/7/130776104/relixorudupedariju.pdf
    • http://files.unklemikesplace.com/uploads/1/3/1/6/131636914/83912.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/41015105828.pdf
    • https://cdn.shopify.com/s/files/1/0431/3468/1250/files/zigobovarigi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9515/3058/files/parum.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2633/files/merivonufotogilu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4981/files/online_converter_to_word_excel.pdf
    • https://cdn.shopify.com/s/files/1/0437/9246/6080/files/vudarexifilazagulegesat.pdf
    • https://cdn.shopify.com/s/files/1/0435/0682/7428/files/43390664742.pdf
    • https://cdn.shopify.com/s/files/1/0435/5656/9249/files/35760568185.pdf
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/5859701795.pdf
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/application_of_third_law_of_thermodynamics.pdf
    • https://cdn.shopify.com/s/files/1/0437/7165/8392/files/88549060338.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/55373798028.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_off000087f1.bin
13ea19476cc1fdbf6c1643d631bef10bb71ee84133b008e0b20b957db1c19554		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87F1 5572 bytes
font_01_sfnt_off00009ac8.bin
214bb513d97c0758557e5397ef95767922ab37712e00173990fb668207f17042		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC8 11624 bytes

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