Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e57854ca0c0ebd6…

MALICIOUS

PDF

62.7 KB Created: 2020-08-18 14:55:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8352cfb29b41d698c6ac79c594aee3f2 SHA-1: 658cf8c51533817adfe256c8fd63dd40758a3ddc SHA-256: 7e57854ca0c0ebd6e4becd939251c1704aef9d2d366a94140b4d62df43be8d14
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1566.002 Spearphishing Attachment T1059 Command and Scripting Interpreter

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to contain text related to a 'hackintosh high sierra guide' and includes the malicious URL. The presence of a 'Clipboard command execution lure' heuristic suggests the document may instruct the user to copy and paste commands, further indicating a malicious intent to trick the user into executing 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.cc/pify?keyword=hackintosh+high+sierra+guide.+zip
    • http://files.bigblueskyinternetmarketing.com/uploads/1/3/1/4/131411857/fd6484ce.pdf
    • http://files.choice-voices.com/uploads/1/3/2/3/132302718/71121704ef4.pdf
    • https://cdn.shopify.com/s/files/1/0439/8556/7902/files/names_of_god_in_the_bible_and_their_meanings.pdf
    • https://cdn.shopify.com/s/files/1/0431/2737/3986/files/zazuwux.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5912/files/activated_sludge_treatment_process.pdf
    • https://cdn.shopify.com/s/files/1/0430/9359/0167/files/mcafee_endpoint_security_10._2_installation_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/2725/0848/files/82728570599.pdf
    • https://cdn.shopify.com/s/files/1/0430/7543/6698/files/dusafibogosujezuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/2091/8679/files/effective_communication_notes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.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_off0000b338.bin
a02159f083ee79a449b7984fbc56ba53822f5ea98e24a014888f7069cd15e07c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB338 5408 bytes
font_01_sfnt_off0000c598.bin
7c4f039b741b4f2505c832f6c94f08e780467504765de65013587e8c1d1c38dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC598 12432 bytes

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