Malicious PDF — malware analysis report

Static analysis result for SHA-256 26835c4d6df1057d…

MALICIOUS

PDF

66.1 KB Created: 2020-09-02 15:14:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0ff4b45faed418901717c8a8e63ca6a SHA-1: 6f0e05da0675a15231dfd358c0591b6963eda2d0 SHA-256: 26835c4d6df1057d010cd8bb1c1e27f6f258f268cb778694af866bfeeb339503
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, intended to lure users to a malicious website. The document body, though heavily obfuscated, contains the same redirector URL. The presence of a link farm further indicates a malicious intent to distribute harmful content.

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.link/wix?keyword=gujarati+bhajan+free++for+mobile
    • https://cdn.shopify.com/s/files/1/0430/5970/8058/files/11310545907.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/enorossi_sickle_bar_mower.pdf
    • https://cdn.shopify.com/s/files/1/0428/5677/5839/files/xojolarebo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2992/8872/files/catholic_liturgical_music.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5b28534d826456db19f75b76b90f09a.pdf
    • https://cdn.shopify.com/s/files/1/0431/3969/4741/files/butterfly_acrostic_poem_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7755/files/77273080590.pdf
    • https://cdn.shopify.com/s/files/1/0431/3881/0010/files/ziredukebudibunegapanak.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/mozijoladifosajasemut.pdf
    • https://cdn.shopify.com/s/files/1/0462/0360/1049/files/dialga_pokemon_go_raid_guide.pdf
    • https://cdn.shopify.com/s/files/1/0446/5996/6105/files/velekukasinugujidarut.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/
    • https://cdn.shopify.com/s/files/1/0429/1434/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b10a.bin
18b3db1a96b25d237c973d28e81fe7f19c7df7dd60b1bee1148f1d2e68915180		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB10A 4956 bytes
font_01_sfnt_off0000c1c2.bin
92d8710ea53a18e9d01043c0e1870bde7abecd8a86acc0b556d94a5a13ce8fbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1C2 14000 bytes
font_02_sfnt_off0000ee04.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE04 4324 bytes

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