Malicious PDF — malware analysis report

Static analysis result for SHA-256 2476ebb9632115a9…

MALICIOUS

PDF

63.8 KB Created: 2020-08-27 17:20:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63b5a4e56f1e62f94b0dd06b6e2da837 SHA-1: 4b74ab35741370d79ae93a4b1879c77e5b578f01 SHA-256: 2476ebb9632115a94fa2829202cf1ed5aed49916c9d7bc1a942e0aadd13559a3
136 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm, with a lure suggesting an invoice or download. The embedded document body text, though partially corrupted, contains the URL 'https://ttraff.ru/pify?keyword=ficha+academia+excel', which is flagged as a malicious redirector. Additionally, it contains numerous links to Shopify-hosted PDFs, one of which is 'https://cdn.shopify.com/s/files/1/0430/4066/9849/files/ranomawiwibajubulodigegag.pdf'. This suggests a phishing or social engineering attack aiming to redirect users to malicious content.

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.
  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=ficha+academia+excel
    • http://files.orienmcneill.com/uploads/1/3/0/7/130775304/dc47f096141de.pdf
    • https://cdn.shopify.com/s/files/1/0430/4066/9849/files/ranomawiwibajubulodigegag.pdf
    • https://cdn.shopify.com/s/files/1/0440/6486/6469/files/62154713943.pdf
    • https://cdn.shopify.com/s/files/1/0428/5680/8607/files/67312189849.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/guarana_dosagem_usual.pdf
    • https://cdn.shopify.com/s/files/1/0430/4653/5322/files/gusezudijasaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/3166/5562/files/dupugemibel.pdf
    • https://cdn.shopify.com/s/files/1/0432/8869/0844/files/turufudukopadurotis.pdf
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/firaxusatezulofeziwabuvof.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62042090741.pdf
    • https://cdn.shopify.com/s/files/1/0437/7378/8321/files/delorelegazod.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1365/files/avery_8160_christmas_label_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/laranadokejof.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b021.bin
0ee8e10d307d5429a01cd47c498e29f47717113f9189a3b56c9ab89f7843336d
pdf-font-stream PDF embedded font (sfnt) at offset 0xB021 4420 bytes
font_01_sfnt_off0000bf17.bin
2836b56fd044f5c9233b4366b528ac815e9d37623d30bdc91df74131e375705d
pdf-font-stream PDF embedded font (sfnt) at offset 0xBF17 11288 bytes
font_02_sfnt_off0000e451.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE451 4324 bytes