Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2355b09414e1c01…

MALICIOUS

PDF

40.2 KB Created: 2020-08-02 04:56:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fb22f964615db62470efe7f7c8cf9d6 SHA-1: 99b9eb5b14110f7a22074d25e053b8afeaebb671 SHA-256: a2355b09414e1c01f4169c9b955295686348bc88d3b3bb2b8e40b167806f64e5
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=city+of+heroes+mastermind+guide'. The document body, though heavily obfuscated, also contains this URL, indicating the primary intent is to redirect users to malicious infrastructure. No scripts were extracted from this sample.

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=city+of+heroes+mastermind+guide
    • http://files.hr-transparency.com/uploads/1/3/1/4/131407111/3e818ae6ad1a696.pdf
    • http://files.thegoodnewswebsite.com/uploads/1/3/0/8/130874067/voxepemoraw.pdf
    • http://files.corneliawoll.org/uploads/1/3/1/4/131438389/9701758.pdf
    • http://files.earsforyears.org/uploads/1/3/1/3/131380845/b824024.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8554/files/92073459069.pdf
    • https://cdn.shopify.com/s/files/1/0436/8056/3350/files/65658401881.pdf
    • https://cdn.shopify.com/s/files/1/0429/7470/7868/files/9089309768.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/jasopedatoga.pdf
    • https://cdn.shopify.com/s/files/1/0439/4660/6760/files/fallout_4_reset_camera.pdf
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/86867740892.pdf
    • https://cdn.shopify.com/s/files/1/0437/0884/2152/files/tamixuruvuno.pdf
    • https://cdn.shopify.com/s/files/1/0433/1828/0357/files/jemixufipoluzuxizoju.pdf
    • https://cdn.shopify.com/s/files/1/0428/3197/0471/files/tetokazudebut.pdf
    • https://cdn.shopify.com/s/files/1/0431/9746/4731/files/rugewogojapejixadolixirub.pdf
    • https://cdn.shopify.com/s/files/1/0429/4069/4684/files/minecraft_easter_egg_borderlands_2.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/fuwelolorogo.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_off00005fbd.bin
2c58591fd01e587f2ab5fcf31d88b974f4b2a5a993c873b493b82e7eda7c7043		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBD 5296 bytes
font_01_sfnt_off0000719e.bin
19686e14b0f2c4b027496b3270a71f0aa240064efc3848d3249f9ec91e3852f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x719E 10032 bytes

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