Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d1a5462173be483…

MALICIOUS

PDF

51.0 KB Created: 2020-08-18 16:05:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a98e7cd0d3c72d17afaec532ae079a7 SHA-1: ee3a50c0e8a013b4ca7583807fca6d7963644d24 SHA-256: 4d1a5462173be48341c78177a523c1ff483ae08b9dd0d44332f7a9b017bb150b
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a phishing or scam attempt. The document body text, though partially corrupted, includes keywords related to application forms and the malicious URL itself. The primary malicious URL is https://ttraff.com/pify?keyword=upsc+online+application+form+2019+last+date, which redirects to a link farm hosted on Shopify. This suggests the document is designed to lead users to malicious content through a series of redirects.

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.
  • 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
  • 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=upsc+online+application+form+2019+last+date
    • http://files.ggsbbq.com/uploads/1/3/0/7/130775402/jenamavolebusematu.pdf
    • http://files.moderndayseer.com/uploads/1/3/0/9/130969546/bulugale.pdf
    • http://files.wlinv.com/uploads/1/3/1/3/131380717/jujonolulupexi_kowujusever.pdf
    • https://cdn.shopify.com/s/files/1/0437/4613/2129/files/zavamewakizaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/3987/3429/files/wow_arcane_mage_artifact.pdf
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/lefewubipedinunex.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0512/files/78483694164.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9863/files/kasedadupenar.pdf
    • https://cdn.shopify.com/s/files/1/0439/2206/3515/files/next_bus_san_francisco_muni.pdf
    • https://cdn.shopify.com/s/files/1/0436/9544/0040/files/lalewinusumav.pdf
    • https://cdn.shopify.com/s/files/1/0433/6815/3239/files/4810125066.pdf
    • https://cdn.shopify.com/s/files/1/0433/8404/5719/files/tabla_de_numeros_primos_del_1_al_10000.pdf
    • https://cdn.shopify.com/s/files/1/0428/0988/4838/files/sejapoz.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/13790687242.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/personal_statement_sample.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_off00007822.bin
4b2ed611f64dd69ba9203947a09eb330cc86d376a0a3c31809261bfab2e951ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x7822 5772 bytes
font_01_sfnt_off00008ba7.bin
9647d39ef762ecc6b4854a852acda8a8aef3b8727d67e0a8bcfaed3dd944858a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA7 10420 bytes
font_02_sfnt_off0000af67.bin
efa67f55afdd2ecc22296d30004fc96e3f5239cc4c0a00b249c5bcfcbd703bbc
pdf-font-stream PDF embedded font (sfnt) at offset 0xAF67 3868 bytes