Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86bd7fea6732c9c…

MALICIOUS

PDF

40.8 KB Created: 2020-08-21 08:52:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d513c613105f02b51c401f25ee90013 SHA-1: d4c667ca40a99b7045d289a5ffa3de191e0d30d7 SHA-256: a86bd7fea6732c9c7455ef2c5eb7ddb6ba6ca043a4c0bce9e7bf1193d449b153
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text related to 'lease or rental agreement template' and a URL that is flagged as a malicious redirector. This suggests a phishing or social engineering attack aimed at directing users to malicious content.

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.ru/pify?keyword=lease+or+rental+agreement+template
    • http://files.evanscountyhistoricalsociety.org/uploads/1/3/1/0/131070867/kajemutepu.pdf
    • http://moleto.noahzion.com/uploads/1/3/1/4/131438044/5897994.pdf
    • http://diwufeme.utflylab.com/uploads/1/3/0/9/130969933/kirikodinaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/8493/0462/files/zubaxitiwafufelilebaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/5187/4466/files/action_movie_fx_star_wars.pdf
    • https://cdn.shopify.com/s/files/1/0436/9770/1017/files/case_study_research_design_and_methods_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/33431081314.pdf
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/pibutoto.pdf
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/printable_attendance_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0462/9485/9936/files/la_cantatrice_chauve_telecharger.pdf
    • https://cdn.shopify.com/s/files/1/0429/2172/2015/files/meg_cabot_abandon.pdf
    • https://cdn.shopify.com/s/files/1/0447/1462/3130/files/xelufulizatesasegonomum.pdf
    • https://cdn.shopify.com/s/files/1/0440/7758/0453/files/steuerklasse_wechseln_antrag.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6813/files/police_report_example_robbery.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/valamutori.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_off0000639f.bin
2b9700c996bdccb9c0d87ad471bbcf16637101ca0ed0c4f4305992aa5cab9b8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x639F 5080 bytes
font_01_sfnt_off000074d1.bin
fb10d8a1268d6d3b8708336c4595a62e242f59fa0f35054012114d8ee3976340		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D1 9856 bytes

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