Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a1d682e23a417e2…

MALICIOUS

PDF

35.4 KB Created: 2020-08-12 00:12:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80dff9a3bade7c6217f73975518cddd3 SHA-1: 2fa821b519360124c80a08e0fc901af51e632ec4 SHA-256: 1a1d682e23a417e2b6997592c6493a5c5f5dcea2cb8aca754f5ccfa2d0fd5821
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The primary attack vector appears to be tricking the user into clicking a link that leads to malicious infrastructure.

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/wb?keyword=hoja%20milimetrica%20pdf
    • http://verod.canal-art-by-julie.co.uk/uploads/1/3/2/6/132695578/gelulugedib.pdf
    • http://files.thejansenandrahbekcollection.com/uploads/1/3/0/7/130776326/kinukozewulu.pdf
    • http://files.babasvegancafe.com/uploads/1/3/0/8/130874066/xogovonodexuwepodu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69143450337.pdf
    • https://cdn.shopify.com/s/files/1/0431/5601/3205/files/muserubokoxiros.pdf
    • https://cdn.shopify.com/s/files/1/0435/7881/8715/files/nipexe.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/donafavotoxaluka.pdf
    • https://cdn.shopify.com/s/files/1/0445/3256/4132/files/ncfm_mergers_and_acquisitions_module_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8410/3332/files/69660796147.pdf
    • https://cdn.shopify.com/s/files/1/0429/6949/7753/files/27854688185.pdf
    • https://cdn.shopify.com/s/files/1/0429/2807/9004/files/tuxowakifamadipozifup.pdf
    • https://cdn.shopify.com/s/files/1/0435/3271/4139/files/free_aws_solution_architect_associate_braindumps.pdf
    • https://cdn.shopify.com/s/files/1/0431/4074/3329/files/top_30_engineering_colleges_in_hyderabad_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/66989143736.pdf
    • https://cdn.shopify.com/s/files/1/0428/1293/2255/files/47218562625.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_off00004e82.bin
4ed5546ec82990a9984277231a86ce1eb1a94a15ce0160111d526ae8ff103f28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E82 5160 bytes
font_01_sfnt_off00005fff.bin
b52f3f2ca33a5c06a62e055cb358f6d3edded43714fac31abbe24dcf35534ab0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFF 9728 bytes

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