Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b5d1d111e8e45c…

MALICIOUS

PDF

43.1 KB Created: 2020-08-10 11:58:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61216c7ac3cfdf0a013c5f2534da6137 SHA-1: b26952f7796247beb7b30c8a1aae8ab9d205788c SHA-256: 96b5d1d111e8e45c1b2ec21e026677d6783fa14e0955d713c7029830905d927b
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with many links pointing to benign Shopify URLs but one critical link to a known malicious redirector. The embedded document body text, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=present+perfect+with+already+and+yet+exercises+pdf, which is identified as a malicious redirector. This suggests the document's primary purpose is to lure users into clicking the malicious link, likely leading to further compromise.

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.cc/pify?keyword=present+perfect+with+already+and+yet+exercises+pdf
    • http://files.allezmag.co/uploads/1/3/1/1/131163738/907792.pdf
    • http://files.bellaandpolly.com/uploads/1/3/1/3/131380504/tumuwuvamimiv.pdf
    • http://files.purpleheartracing.org/uploads/1/3/0/7/130775649/zoxojebodesu_wamodobarowuta_pusutemizozib.pdf
    • http://files.yoonoptometry.com/uploads/1/3/1/4/131406453/369a1387f346.pdf
    • http://files.chicagoschoolofgrappling.com/uploads/1/3/1/4/131409170/312064.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rixaraxamixenapo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4311/0555/files/79846706219.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/mama_i_m_coming_home_tab.pdf
    • https://cdn.shopify.com/s/files/1/0436/7217/4745/files/74230579411.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7641/files/tonimavapesexozapola.pdf
    • https://cdn.shopify.com/s/files/1/0431/7590/3383/files/never_stop_learning_ayman_sadiq_book.pdf
    • https://cdn.shopify.com/s/files/1/0436/4930/2693/files/lewefipufiligiju.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71061356311.pdf
    • https://cdn.shopify.com/s/files/1/0429/7778/8057/files/facies_acromegalica.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/caracteristicas_sociales_del_adulto_joven.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zosogorimojafi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/dajafopuwigeninedalelev.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_off000067aa.bin
9dde34ace2925b06a450ebee4ddfb286bc5289990b567b129954f8d1f184af36
pdf-font-stream PDF embedded font (sfnt) at offset 0x67AA 5508 bytes
font_01_sfnt_off00007a7c.bin
ed3de1484d2fee962dfd403f593652ef83afeb9a2484e33558e9ea22d3bec79c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7C 10772 bytes