Malicious PDF — malware analysis report

Static analysis result for SHA-256 d10ac68643c05e38…

MALICIOUS

PDF

44.1 KB Created: 2020-08-22 01:17:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fe1d64c2364d3b8daf401fefc3ee984 SHA-1: 0a0acbfbd72fce325ddc767ae324a0d9d22c476c SHA-256: d10ac68643c05e38537966cad29a09ae12e540e9a94ce71efac4748bf50e18b2
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and references 'free shed plans', suggesting a lure. The PDF also contains a link farm heuristic, indicating it's part of a larger SEO poisoning effort to drive traffic to malicious sites. The presence of a 'download button' heuristic further supports the lure-based attack pattern. The file is likely a downloader or redirector disguised as a document.

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.ru/pify?keyword=free+shed+plans+12x16
    • http://files.gallery-lesmemoiresdejacqmotte.com/uploads/1/3/1/8/131871864/dotozisezukegad_jenava.pdf
    • http://rafeletu.camileaccessories.shop/uploads/1/3/1/6/131606624/9054123.pdf
    • https://cdn.shopify.com/s/files/1/0440/6594/7800/files/25438913984.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/fukuwenam.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/letter_template_illustrator.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/mepijagamudelesanipumubif.pdf
    • https://cdn.shopify.com/s/files/1/0435/2429/2762/files/anime_cloud_apk_pure.pdf
    • https://cdn.shopify.com/s/files/1/0434/3654/0056/files/27428426668.pdf
    • https://cdn.shopify.com/s/files/1/0431/4673/9878/files/11548367970.pdf
    • https://cdn.shopify.com/s/files/1/0440/5913/2054/files/simbologia_cade_simu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/american_english_file_2_teacher_s_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0450/4931/5478/files/laboratory_glassware_and_their_uses.pdf
    • https://cdn.shopify.com/s/files/1/0437/1234/8315/files/altered_states_1980_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/9820/1502/files/51565393606.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_off00006e51.bin
c56c53f6a8824e2119a9d1a8ed2ce5e75a0f23a25506b0c27b630a01ac67a880
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E51 5408 bytes
font_01_sfnt_off000080b8.bin
4dc515817fdc6e191fec3461b7d19bac16a60723860d50e5cd1bc66ec9cb41cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x80B8 10248 bytes