Malicious PDF — malware analysis report

Static analysis result for SHA-256 e24a4a5774e4322c…

MALICIOUS

PDF

94.2 KB Created: 2020-09-09 22:25:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdb2ec91b825c17eccf075883cdd99f3 SHA-1: d9d5b7f36dd3db16d984122eafbe77282446d311 SHA-256: e24a4a5774e4322cf9e1b7376c88053ca447c369bd404fca3200463974426ce4
128 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, disguised with a keyword related to game cheats. This suggests a social engineering attack aimed at tricking users into downloading malware. The PDF also hosts a large number of other PDFs, likely for SEO manipulation to improve the visibility of the malicious link. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=rules+of+survival+mod+apk+aimbot
    • https://cdn.shopify.com/s/files/1/0429/7680/5023/files/ravibepidalena.pdf
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/adda_movie_video_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/4734/5573/files/68476019800.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5322/files/alaris_pca_pump_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/ccleaner_exe_file.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/budakogekelefubasedu.pdf
    • https://cdn.shopify.com/s/files/1/0438/6055/7984/files/3909299365.pdf
    • https://cdn.shopify.com/s/files/1/0465/4897/5774/files/different_synonym_formal.pdf
    • https://cdn.shopify.com/s/files/1/0436/2141/7123/files/estatica_hibbeler.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3816/files/a_shepherd_looks_at_psalm_23_large_print.pdf
    • https://cdn.shopify.com/s/files/1/0456/5270/5447/files/91260228469.pdf
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/nirumalopofakujofu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/algebra_1_review_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/41569398306.pdf
    • https://static.usrfiles.com/ugd/3b7182_96c5c84451564be392fba4101c448255.pdf
    • https://static.usrfiles.com/ugd/30e015_7f109963436941e0bcd5f0594d113d58.pdf
    • https://static.usrfiles.com/ugd/6290de_8638b04879714ba5b910deea12de4081.pdf
    • https://static.usrfiles.com/ugd/73c254_868c583a13ef46f491bc33f935ea4d6c.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 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc57.bin
982d7eedd85859f86d415ed7744859cb8664360910122edd03129c31d6b670dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC57 3464 bytes
font_01_sfnt_off0000e8b0.bin
acfd847f303105ece216ff487fd7e9f0e1d948b65ae8f5a3c2c5101173b02d2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B0 5232 bytes
font_02_sfnt_off0000fa81.bin
e8641a9ae3b6405de94f953f362909e0511aecd40169df663f68f197da6bd8a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA81 7392 bytes
font_03_sfnt_off00011338.bin
625faf43913d517f6b6de32c8c0c6512a9e77c12fa1f647683acba9fab3ac9a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11338 16960 bytes
font_04_sfnt_off00013fe1.bin
52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13FE1 16036 bytes
font_05_sfnt_off00015449.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15449 4324 bytes
font_06_sfnt_off000161fc.bin
0d9b6ab0354368cdfa5a4e52e4dfb250ede80cec4283e48fafec0a3c1c1d30df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x161FC 1736 bytes

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