Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf6f58356ae5cbc0…

MALICIOUS

PDF

47.4 KB Created: 2020-08-26 01:09:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58cf475c3224231b4431982a8dc2443e SHA-1: 614ee380a8ec8ad5e6dee5b17db44eb65d13da4e SHA-256: bf6f58356ae5cbc0cd4bd6bffcba40a63734d584cc2c0f7d192c3cea586cd5a7
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body itself is heavily obfuscated but contains the same redirector URL. The primary purpose appears to be to lure the user into clicking through a chain of links, ultimately leading to a malicious destination.

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/pify?keyword=ragnarok+m+wizard+gear+guide
    • http://files.mad-artist.com/uploads/1/3/1/3/131383657/ninoxasotelasudox.pdf
    • http://kupurur.4assange.info/uploads/1/3/1/3/131398252/rapezorazoni.pdf
    • http://tojufu.innovationfitnessri.com/uploads/1/3/0/9/130969521/8639680.pdf
    • http://files.janebliz.com/uploads/1/3/0/7/130740477/bonedolizedepe_givati.pdf
    • https://cdn.shopify.com/s/files/1/0433/7991/6963/files/monk_class_hall.pdf
    • https://cdn.shopify.com/s/files/1/0429/3525/5203/files/check_whether_homebrew_is_installed.pdf
    • https://cdn.shopify.com/s/files/1/0428/6418/1404/files/98229251736.pdf
    • https://cdn.shopify.com/s/files/1/0436/9799/5941/files/tipozi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7968/7574/files/imagina_espanol_sin_barreras.pdf
    • https://cdn.shopify.com/s/files/1/0434/1163/6381/files/catch_the_rainbow_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0435/3343/5039/files/24581037298.pdf
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/34588102835.pdf
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/5579821490.pdf
    • https://cdn.shopify.com/s/files/1/0434/0147/8307/files/65510891574.pdf
    • https://cdn.shopify.com/s/files/1/0460/1230/1479/files/76909794703.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_off00006ea7.bin
e913fec042689c2e9771911029a9af21e973cb9fb86fac3d9f06edd7a98b0e13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA7 4952 bytes
font_01_sfnt_off00007f72.bin
86f99cf89d0741772ac33efa54d021af791a5e2e6c1c9efaa843898a30909719		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F72 10360 bytes
font_02_sfnt_off0000a2df.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2DF 4324 bytes

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