Malicious PDF — malware analysis report

Static analysis result for SHA-256 50e99b4a14f6e6cc…

MALICIOUS

PDF

51.4 KB Created: 2020-08-06 14:26:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a36f694a4ceda92bbddbf002c6584235 SHA-1: 7b9066e9d3fc3e4974c0e460f7cab20df962e663 SHA-256: 50e99b4a14f6e6cc4907c97b9da41b978aff7c7631dd8f60a754e195bb4703f3
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as an 'Sbi personal loan application pdf'. The link, https://ttraff.ru/pify?keyword=sbi+personal+loan+application+pdf, points to known malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, including one to cdn.shopify.com, likely for obfuscation or to appear more legitimate.

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=sbi+personal+loan+application+pdf
    • http://superi.fearnoopera.com/uploads/1/3/2/8/132816202/eae7e5b.pdf
    • http://fobeze.sassysproutnutrition.com/uploads/1/3/1/4/131407995/madizolorubofidiwep.pdf
    • http://files.kimmyvibes.com/uploads/1/3/1/4/131408432/gebepis-jagitibezexerej.pdf
    • http://files.sameenabemat.com/uploads/1/3/0/8/130874115/noxamutuwejupu-webixilosij-daxuvoniweva.pdf
    • http://files.ericbayless.com/uploads/1/3/1/4/131482808/lukadaselujazavipu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1390/6327/files/37821608836.pdf
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/kafepapan.pdf
    • https://cdn.shopify.com/s/files/1/0433/5609/4614/files/45744025587.pdf
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/15701486641.pdf
    • https://cdn.shopify.com/s/files/1/0439/7573/7502/files/conditional_operator_in_c_example.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/3710972151.pdf
    • https://cdn.shopify.com/s/files/1/0435/0548/3942/files/xejadatepama.pdf
    • https://cdn.shopify.com/s/files/1/0435/6279/5167/files/libro_de_jorge_basadre.pdf
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/34740876423.pdf
    • https://cdn.shopify.com/s/files/1/0436/4717/2768/files/dimibigijopozizuxon.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54058680795.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/
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/34740876

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a32.bin
19e564326ccfdbcc6134975b5b4d30a9b79930e2fc5a870db3b2f6fa8892dab1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A32 5180 bytes
font_01_sfnt_off00008bc4.bin
67786e55eb043155cd6cc2f8372914e9ee1f9e76098622985360d071e0d32aec
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC4 11504 bytes
font_02_sfnt_off0000b243.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB243 4324 bytes