Malicious PDF — malware analysis report

Static analysis result for SHA-256 b378d4c8047e4d82…

MALICIOUS

PDF

60.2 KB Created: 2020-08-15 08:31:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ca3fed50c733617aaa23a2d32860a6b SHA-1: 18b340c86be4e2c36e0864add9d6cf695e1b1c9c SHA-256: b378d4c8047e4d822b2472b4dbd493f489f1dec7015e60b5c0dc93bdeaaec105
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=avatar+full+hd+movie++1080p'. The document body, though heavily obfuscated, contains this URL and text suggesting a lure for movie downloads. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely to obscure the malicious redirector.

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=avatar+full+hd+movie++1080p
    • http://files.allnewgreenlife.co.uk/uploads/1/3/1/4/131406222/kibutezud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mirogorozizodixomalejog.pdf
    • https://cdn.shopify.com/s/files/1/0440/3278/6597/files/lomoramer.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0269/files/alzheimer_libro.pdf
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/2859709368.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/nefojibako.pdf
    • https://cdn.shopify.com/s/files/1/0449/8276/3679/files/dungeons_and_dragons_5th_edition_character_sheet_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/8522/6393/files/varez.pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8968/files/17682687531.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/resixa.pdf
    • https://cdn.shopify.com/s/files/1/0438/7015/9016/files/mitaxorunudupesezem.pdf
    • https://cdn.shopify.com/s/files/1/0430/0088/9507/files/nukod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/nuxaxeredabetiweriki.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000ae6a.bin
5548f1a3c0e8d3c51543a3335c09615bc34acfbeff4f371486cda4e079bd6bcb		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xAE6A 24752 bytes
font_00_sfnt_off00004ff2.bin
8c130809cb312b931168276781c730c09e9f8b5efa129e653bdd9dc3a59b30c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF2 5540 bytes
font_01_sfnt_off000062b0.bin
25d2fbfb5dd46bce752f1a10cbb8fe29a5ece10bd9e4a33cfa5ea6c363d8700b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B0 20968 bytes
font_02_sfnt_off000082e3.bin
fc56fa02dbe3458291c5fb7062dec2b01f2226dd21b4eff9ce88880a69c4a691		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82E3 2276 bytes
font_03_sfnt_off00008cac.bin
864f0fcf9f82e5d8f9db4cdb8c4622c5fc7fad3dc49cf91732c7f7abd347e37b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAC 9772 bytes
font_05_sfnt_off0000d9ae.bin
589f2a64e89766a8ae62896ea8444fa1a87810255c984bbc4fd2a260c4929d56		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AE 2056 bytes

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