Malicious PDF — malware analysis report

Static analysis result for SHA-256 4021fc750d2dd408…

MALICIOUS

PDF

48.1 KB Created: 2020-08-19 18:54:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 700d6cc9159119fa6339c9f730ef1388 SHA-1: 727004dde2cb120aba587aa50a4f1e8c4d78f0e2 SHA-256: 4021fc750d2dd4085782ab1354f4b0f4ff2fba9b2d4751405d2fa7d5b0d9993f
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to appear as search engine results, with the primary malicious link redirecting to a known malicious domain. The document body, though partially corrupted, contains the text 'Hd graphics for gta san andreas' and the malicious URL, suggesting a lure to entice users to click the link. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link 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.cc/pify?keyword=hd+graphics+for+gta+san+andreas
    • http://files.thesocialistpig.com/uploads/1/3/1/4/131437615/4983557.pdf
    • https://cdn.shopify.com/s/files/1/0433/4161/1159/files/11016425582.pdf
    • https://cdn.shopify.com/s/files/1/0429/1503/7343/files/jared_diamond_the_world_until_yesterday.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8320/files/kukadonon.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/70817711155.pdf
    • https://cdn.shopify.com/s/files/1/0436/1804/2018/files/magic_kitchen_match-_3_game_apk.pdf
    • https://cdn.shopify.com/s/files/1/0439/9320/2846/files/godibokomatujudowome.pdf
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/konexolovaximowew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0805/6740/files/zopamoxetelebadodow.pdf
    • https://cdn.shopify.com/s/files/1/0432/6604/8164/files/vufejaderake.pdf
    • https://cdn.shopify.com/s/files/1/0431/6135/4389/files/job_interview_question_and_answer_ppt.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/docker_kill_all_running_containers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000667f.bin
d433a4b41903f650414f1f175609b18855e335f51f62e0d8fc93095a67a8936e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x667F 5344 bytes
font_01_sfnt_off000078a9.bin
1a423862beee23b9902d66d35edaefa23f8a4e35c5c4506144dc9d556b67d41c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A9 11092 bytes
font_02_sfnt_off00009e91.bin
c4f6c9894e725f9694f23de80c3484766eb32e27d1e5b248ed39ff88460af8f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E91 16088 bytes

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