Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba13f2e98c978adb…

MALICIOUS

PDF

35.1 KB Created: 2020-09-10 10:59:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02f88897fccc7efb39195550ad806ad9 SHA-1: bb7d9c017f3b02f2a23e8ce4f52278dab7841dce SHA-256: ba13f2e98c978adb0bc310351a38d2f9146f34f763f7692e29becf1eb0e99e3f
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to a redirector service. The primary malicious URL identified is ttraff.club, which is used to redirect users to a page related to 'english grammar in gujarati pdf'. This suggests a phishing or scam attempt leveraging SEO-like tactics to attract victims. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/wix?keyword=english+grammar+in+gujarati+pdf
    • https://static.usrfiles.com/ugd/b8c837_0dcf7ec2b9304b93a502b2df4ea6278d.pdf
    • https://static.usrfiles.com/ugd/1fbf8b_2cb4c125797a4ea483f64b2a83321e4b.pdf
    • https://static.usrfiles.com/ugd/ea2c45_1faca5e7bb994e228d624e795aa71997.pdf
    • https://cdn.shopify.com/s/files/1/0435/5827/3183/files/argano_manuale_a_fune_fervi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8394/7427/files/temperate_deciduous_forest.pdf
    • https://cdn.shopify.com/s/files/1/0440/7263/2470/files/higher_order_thinking_questions_for_guided_reading.pdf
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/broken_heart_girl_image.pdf
    • https://cdn.shopify.com/s/files/1/0431/6663/0050/files/86820304997.pdf
    • https://static.usrfiles.com/ugd/02631b_23e0999f1f9f4828b553f7f89f6d2c4c.pdf
    • https://static.usrfiles.com/ugd/35ddae_0cac4c6f05794b3dac37c7185326bfb0.pdf
    • https://static.usrfiles.com/ugd/b463f2_8aeb6255cb9145cf9a14b81cfe6537e5.pdf
    • https://cdn.shopify.com/s/files/1/0465/0785/1926/files/afrikaans_to_english_translation.pdf
    • https://cdn.shopify.com/s/files/1/0437/9662/7618/files/shahryar_and_scheherazade.pdf
    • https://cdn.shopify.com/s/files/1/0440/7528/6693/files/sobidijasoxinumerule.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_off00004b91.bin
7391128a37bdf87358ac6d015841982562f3669d5cbf15c0474072ec0b000002		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B91 5488 bytes
font_01_sfnt_off00005e1c.bin
a772e88aa09893c47ab45d3f6f440f1c047009c1e1245a5c49dbd43958d25295		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1C 9864 bytes

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