Malicious PDF — malware analysis report

Static analysis result for SHA-256 854f2e9ed797605d…

MALICIOUS

PDF

118.5 KB Created: 2020-08-18 19:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ab8ea6559e30b86dbc209274e8731c7 SHA-1: fdd51da405a95327da3409eac6fb91616ab20235 SHA-256: 854f2e9ed797605d8d6c3b5cab1e10ef8482102f472b6cbb0a30e75bd20cdb7c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector at 'ttraff.com'. Another heuristic indicates a PDF link farm, suggesting an attempt to generate traffic or distribute malicious content. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=top+100+songs+in+the+world', reinforcing the malicious redirector finding.

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=top+100+songs+in+the+world
    • http://files.lebiennali.com/uploads/1/3/2/7/132711954/3559209.pdf
    • http://files.centralpolicestation.org/uploads/1/3/1/3/131379801/xipadajabe.pdf
    • https://cdn.shopify.com/s/files/1/0440/7630/2486/files/saxenexuzefevuxunilala.pdf
    • https://cdn.shopify.com/s/files/1/0450/3732/2390/files/papercraft_car_templates.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/wajapasad.pdf
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/wabotigi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4460/8932/files/virtualbox_exit_scaled_mode.pdf
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/abrsm_piano_prep_test.pdf
    • https://cdn.shopify.com/s/files/1/0434/7153/6290/files/bohemian_rhapsody_piano_partition.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6905/files/4574096956.pdf
    • https://cdn.shopify.com/s/files/1/0438/6842/2309/files/goduxoso.pdf
    • https://cdn.shopify.com/s/files/1/0435/1796/8543/files/skyrim_guide_book.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_off00018a78.bin
da9ef57307aa944e38fda997a23b48146a9d48d2e33a8e0bdc58c8335148e0cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x18A78 5248 bytes
font_01_sfnt_off00019c5b.bin
7e8e02658feb2947d5643c7c6663c5c2081010a5c50018c9def36b4470696e9f
pdf-font-stream PDF embedded font (sfnt) at offset 0x19C5B 15640 bytes