Malicious PDF — malware analysis report

Static analysis result for SHA-256 94591ea6dade7fdd…

MALICIOUS

PDF

46.1 KB Created: 2020-08-14 12:42:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7141cb66e808675cd36fd16a37e8539e SHA-1: 3dc0927c6d39e39445317e11629fbdf18cedc243 SHA-256: 94591ea6dade7fdd2bba7dadb153defa936a799087b449c51502fa870280f216
168 Risk Score

Malware Insights

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

The PDF contains a lure related to 'Philhealth payment slip' and includes a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, suggesting an attempt to manipulate search engine results or distribute content. The presence of MFA lure heuristics indicates a potential credential harvesting attempt. No scripts were extracted from this sample.

Heuristics 5

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=philhealth+payment+slip+able
    • http://files.music2meditate.org/uploads/1/3/0/7/130739043/mogil-mizedufaje-zifekode-perozolorogupub.pdf
    • http://vivakij.whitneywilda.com/uploads/1/3/2/7/132710621/nefusitirolotimew.pdf
    • http://pasori.katherinewolff.net/uploads/1/3/1/0/131070872/5e32d860e.pdf
    • http://voviz.canadianinjuredflorida.com/uploads/1/3/2/8/132814337/sijiziruxomug.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/lindsey_stirling_first_light_sheet_music_violin.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/zavoxamazojige.pdf
    • https://cdn.shopify.com/s/files/1/0438/8411/8171/files/gagodotunugibusixuwuvu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/68635430031.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/fawozezexamazufaxetoxasuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/9620/2661/files/belotero_soft.pdf
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/doukyuusei_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0432/7325/7116/files/jikevowininifovufepupabo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kerikelamizefebimu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4167/7731/files/levupobamidepaxapeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/43250592512.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/labozokutetelewagenak.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_off00007813.bin
37084d395a261a30c13bfebf28a248adacdb136dee23e5955e770e50b27e99df
pdf-font-stream PDF embedded font (sfnt) at offset 0x7813 5208 bytes
font_01_sfnt_off000089a8.bin
44995ed84b7d3ac0245b587f0405ccdd3e480462a0202b12ef5d6c473079f9b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x89A8 10012 bytes