Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bf54d7ccb314779…

MALICIOUS

PDF

44.3 KB Created: 2020-07-30 22:13:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fedd97917660f8a52d247c899fb2ac6 SHA-1: ceb71945f95832553c77efd8b00ffef501c7a2cb SHA-256: 8bf54d7ccb3147795dd87670fdd0672be64f0a24c2ff88c085de3f1a9cf53083
120 Risk Score

Malware Insights

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

The PDF file contains a deceptive title suggesting free educational material, but analysis reveals it links to a malicious redirector at 'ttraff.com'. This redirector is likely used to funnel victims to phishing sites or download further malicious content. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious content.

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.com/pify?keyword=chemistry+notes+for+class+11+pdf+free+download
    • http://files.openartsstudio.com/uploads/1/3/0/9/130968994/ca6abb40.pdf
    • http://files.troutcreekventures.com/uploads/1/3/0/8/130813768/bfc92e7594da.pdf
    • http://files.rhythmstick.co.uk/uploads/1/3/1/8/131856276/kepeda_gorogasenirub_jefaveviva_somapijox.pdf
    • http://files.ldfestival.com/uploads/1/3/1/4/131453268/geritozuwaguxevejeme.pdf
    • https://cdn.shopify.com/s/files/1/0438/0088/7457/files/50208334327.pdf
    • https://cdn.shopify.com/s/files/1/0428/0428/1511/files/15931200557.pdf
    • https://cdn.shopify.com/s/files/1/0436/7217/4745/files/28166244139.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudogezemolajefenupil.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/wofisodisureburobo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5384/9499/files/baduminegi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6827/7415/files/tebimigugir.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4993/files/45010398800.pdf
    • https://cdn.shopify.com/s/files/1/0434/4968/0028/files/16175949661.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_off00006f57.bin
7f7efb8e6645d35168d2a2776544b9c81c5a6a34fb04777f5588dfe3687364b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F57 5452 bytes
font_01_sfnt_off000081d4.bin
a34d7272fca980af84918410d757d40f7f0028e40d34a641f535e07d45108e85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81D4 10016 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.