Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff61d17d346451ad…

MALICIOUS

PDF

51.7 KB Created: 2020-08-20 23:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03763ccb48008cb1907f788c28ec56f0 SHA-1: dff914b00d9bd7eab3bcebcec6dbe5b3c0086aea SHA-256: ff61d17d346451ad372b31c29c8e10d6080ee6b247a6f837597376c06c5c79b6
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The primary heuristic indicates a PDF link farm, suggesting a tactic to manipulate search results or distribute malicious content. The ML classifier strongly flagged this PDF as malicious. The embedded URL 'https://ttraff.ru/pify?keyword=ark+aberration+mushrooms+guide' is a key indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=ark+aberration+mushrooms+guide
    • http://files.wlovedesign.com/uploads/1/3/0/8/130814605/b73f96c5605a9e.pdf
    • http://jifemu.jimfazioart.com/uploads/1/3/2/6/132695517/9565686.pdf
    • http://files.gretchensuarezpena.com/uploads/1/3/1/4/131452826/detiwura.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/nirum.pdf
    • https://cdn.shopify.com/s/files/1/0431/3271/5163/files/fafsa_2020_21.pdf
    • https://cdn.shopify.com/s/files/1/0436/2724/9826/files/addams_family_musical_overture_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/4667/4336/files/7624170436.pdf
    • https://cdn.shopify.com/s/files/1/0431/8419/3697/files/98224671634.pdf
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/watermark_mac_os.pdf
    • https://cdn.shopify.com/s/files/1/0433/7749/2118/files/magujezejudenupuduxoxev.pdf
    • https://cdn.shopify.com/s/files/1/0428/5091/0364/files/spelling_bee_words.pdf
    • https://cdn.shopify.com/s/files/1/0432/5595/5619/files/ganubufufatelugixev.pdf
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/dukanumexumubisopalufawib.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_off00007e2e.bin
a30c489c5cfe3c45d066f47a431b3ba20d219cf0a350c642db0e093c98d23de1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2E 5284 bytes
font_01_sfnt_off00008fee.bin
1766153ded8a32df804007a9005e5ddd2e84a0a23918a49646ef34aa7796b835		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FEE 10516 bytes
font_02_sfnt_off0000b3dd.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3DD 4324 bytes

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