Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f640a9e9ab5d38d…

MALICIOUS

PDF

44.5 KB Created: 2020-08-18 19:45:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 37cc16e591735633cbd75a1328e821ae SHA-1: 452a034178b3e2723bb65913e5409e52840b0ece SHA-256: 2f640a9e9ab5d38db1e7cb8e8f5f481e58c64e8f464906fc04ed456da970e8a8
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of a 'password-protected archive lure' heuristic suggests the document is designed to trick the user into believing they need a password to access content, which is often a precursor to downloading malware. The primary malicious URL is https://ttraff.com/pify?keyword=avg+com+serial+at%25C3%25A9+2018.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=avg+com+serial+at%25C3%25A9+2018
    • http://laxex.babydollsheepaustralia.com/uploads/1/3/1/4/131454207/kemulufuvereri.pdf
    • http://files.nexusdesign.co/uploads/1/3/0/8/130813357/80fdb5249.pdf
    • http://fapebelak.belinktrans.info/uploads/1/3/1/6/131606289/8563dcc1.pdf
    • https://cdn.shopify.com/s/files/1/0433/9954/4984/files/25010239428.pdf
    • https://cdn.shopify.com/s/files/1/0434/4833/6536/files/kovazimovinuwosodi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/92220455757.pdf
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/37849635048.pdf
    • https://cdn.shopify.com/s/files/1/0445/6588/9188/files/binomial_theorem_class_11_ncert.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/niwixum.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1547/files/6_team_tournament_bracket.pdf
    • https://cdn.shopify.com/s/files/1/0431/9097/6673/files/pdf_to_word_converter_premium_apk_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/4317/7126/files/72661494623.pdf
    • https://cdn.shopify.com/s/files/1/0437/6559/6321/files/pofelasino.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_off00006b88.bin
ab0fb080f04a6582db1130b8abd2c075521e20faefb3481371521f046ac3fcea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B88 5828 bytes
font_01_sfnt_off00007f0e.bin
c8bfb142093398b9328d85f175500af567d388cc1482402f0e1305170caba4ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0E 10948 bytes

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