Malicious PDF — malware analysis report

Static analysis result for SHA-256 c83497b84dcdc25b…

MALICIOUS

PDF

40.4 KB Created: 2020-08-13 23:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd282676dbe83f89efd013bae18437bf SHA-1: 53e485c07e1b9c86a3526fcff1eea45295b29bc7 SHA-256: c83497b84dcdc25b390dd7b3474e32933165f7d261e8556afd82d9624242a533
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body also contains a call-to-action phrase and the same URL, suggesting a social engineering lure to trick users into clicking the link. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for the 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.
  • 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=convert+word+document+to+fillable+template
    • http://files.alamancepride.org/uploads/1/3/1/8/131856545/72f511dd5.pdf
    • http://munofera.mypersonaltruth.com/uploads/1/3/1/1/131163635/gitiragivudojib_lopixas.pdf
    • http://jilaza.gabrielfadale.com/uploads/1/3/2/6/132681352/gamap.pdf
    • https://cdn.shopify.com/s/files/1/0433/6346/7414/files/55268123163.pdf
    • https://cdn.shopify.com/s/files/1/0434/5777/3725/files/24917778407.pdf
    • https://cdn.shopify.com/s/files/1/0435/5814/2120/files/methanol_water_distillation_column_design.pdf
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/76968011793.pdf
    • https://cdn.shopify.com/s/files/1/0432/3721/2319/files/juzeluxagakajowufemase.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/gogowesasegusupobiguzef.pdf
    • https://cdn.shopify.com/s/files/1/0435/9464/5672/files/sugarbush_snow_report.pdf
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/apc_1000_ups_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/8557/5832/files/feresexoziv.pdf
    • https://cdn.shopify.com/s/files/1/0430/5541/5445/files/64585003943.pdf
    • https://cdn.shopify.com/s/files/1/0427/8432/5798/files/24823707309.pdf
    • https://cdn.shopify.com/s/files/1/0436/2836/3939/files/kerurajuxu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4646/8769/files/41630169218.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_off00006113.bin
cf2394a1be70ffce244b49ff1c09a4426b62d0a028dc442f9ce6c40cf016ff3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6113 5320 bytes
font_01_sfnt_off0000731d.bin
d2bb55b27cdfa1e1408cb0a06fe82bc212ea2de76bcd49ce07d2e531b13be53a
pdf-font-stream PDF embedded font (sfnt) at offset 0x731D 9684 bytes