Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8d0207b27b409e5…

MALICIOUS

PDF

54.7 KB Created: 2020-08-31 03:07:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 895f5900640c6db6ff6ea2c523d1718c SHA-1: 3075b6f2ca330901a685f4be78db9af911d8eccf SHA-256: b8d0207b27b409e5f27da6848c5b3aeefaf8ddf1262526ced6671124b8be2604
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector URL. The document body, though heavily obfuscated, contains the target URL and appears to be a lure for a game launcher. The heuristic firings confirm the presence of a malicious redirector and a link farm, indicating an attempt to drive traffic 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.ru/wix?keyword=movie+battles+2+keep+launcher+running
    • https://static.usrfiles.com/ugd/b8c837_3e92215b4e45415382f634a0c6f2f504.pdf
    • https://static.usrfiles.com/ugd/b8c837_451c29b0534c40898134d3f27dac7462.pdf
    • https://static.usrfiles.com/ugd/dba42a_f8b4f1d76de5480a83d7b9c359299868.pdf
    • https://static.usrfiles.com/ugd/fb83f1_71454f00a71d4e21b788aa45e4444e7f.pdf
    • https://static.usrfiles.com/ugd/b8c837_319dcc4883274e6bb420b8e9bea3a978.pdf
    • https://cdn.shopify.com/s/files/1/0432/4117/7248/files/6609534811.pdf
    • https://cdn.shopify.com/s/files/1/0433/9079/5934/files/konsep_pluralisme.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/88354297831.pdf
    • https://cdn.shopify.com/s/files/1/0439/8029/2254/files/2009_ford_focus_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/2322/0392/files/joindre_deux_mac.pdf
    • https://cdn.shopify.com/s/files/1/0433/4691/9579/files/java_interview_questions_on_threads.pdf
    • https://cdn.shopify.com/s/files/1/0430/6727/7469/files/tatijavexamigab.pdf
    • https://cdn.shopify.com/s/files/1/0438/6075/4582/files/denebuxinulesafetakimuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8539/files/marathi_recipes_book_app_free.pdf
    • https://cdn.shopify.com/s/files/1/0461/3868/7641/files/vexom.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_off000096fa.bin
75b286830a874b59ba4d1bce69a4532663559de1af4b9e2c4c0c0722645be6ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96FA 5596 bytes
font_01_sfnt_off0000aa08.bin
1dac2f7b6c8c0d7e1ea51e391ab8d8c2268ec3eca49f1f5095a0dc40bfb6323b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA08 10420 bytes

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