Malicious PDF — malware analysis report

Static analysis result for SHA-256 515b41f3a86a4c1d…

MALICIOUS

PDF

48.7 KB Created: 2020-08-04 05:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d66d7e3a7d694810e9615e71c27c1b94 SHA-1: 681423e4c1876722bd2897b8e2ff7657af214095 SHA-256: 515b41f3a86a4c1d71a9f27763df3375261fae52b5425705122baaa86e987a13
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links to external PDFs, including one hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains text related to 'Cetoacidosis diabetica fisiopatologia pdf 2020' and includes the malicious URL, suggesting a lure to trick users into downloading or accessing malicious 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=cetoacidosis+diabetica+fisiopatologia+pdf+2020
    • http://files.teamhagercommercialrealestate.com/uploads/1/3/1/3/131378838/rujutukelijixil.pdf
    • http://files.unwhomecoming.com/uploads/1/3/0/9/130969723/kukog.pdf
    • http://files.colesworldofmathematics.com/uploads/1/3/0/7/130740391/zipadadedofo.pdf
    • https://cdn.shopify.com/s/files/1/0428/0729/6163/files/42544781522.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/33504122857.pdf
    • https://cdn.shopify.com/s/files/1/0429/8237/5577/files/76305704894.pdf
    • https://cdn.shopify.com/s/files/1/0433/7221/6483/files/kajuro.pdf
    • https://cdn.shopify.com/s/files/1/0430/8792/1313/files/10898767250.pdf
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/suloruwuwitajukudurik.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/zudekipikutebejoxuwol.pdf
    • https://cdn.shopify.com/s/files/1/0438/3621/1357/files/kurowejalukevixedivo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1958/3138/files/sopivutuwixosaloxezopu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/wokowasebamumidokuriro.pdf
    • https://cdn.shopify.com/s/files/1/0430/8366/1461/files/13411828502.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_off00007ebc.bin
301c91e4a832878bac5a2c09f7b6f3641ca7da50636ed69671d34df4ace66cf1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBC 5548 bytes
font_01_sfnt_off000091a6.bin
f96bee6c742b23cabba67f0b69c5a85e47ebc7d2268720d58740e924eb7428b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x91A6 10556 bytes