Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad1b624954839312…

MALICIOUS

PDF

42.9 KB Created: 2020-08-26 00:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3b2a236244c4eb9a53d2e1334598eaf SHA-1: dbb17e99fa4715d3ca929465c9f6a1cb923b93d6 SHA-256: ad1b624954839312ee36c61129b138931c63750cdb85b96efb2bdbb8354c1204
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the 'ttraff.link' domain. The document body, though partially corrupted, suggests a lure related to 'cbse class 12 physics investigatory projects pdf', indicating a social engineering pretext. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links further supports a malicious intent to redirect users to potentially harmful content.

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.link/pify?keyword=cbse+class+12+physics+investigatory+projects+pdf
    • http://files.peacelovehappydaze.com/uploads/1/3/0/7/130738701/nunibabo.pdf
    • http://fopiwov.carolinaconjure.com/uploads/1/3/0/7/130739590/5920171.pdf
    • http://files.rshererart.com/uploads/1/3/0/9/130969723/4020877.pdf
    • http://files.becky-baker.net/uploads/1/3/0/8/130813528/wutuweko.pdf
    • https://cdn.shopify.com/s/files/1/0438/3080/4637/files/buwomotimivapajuroja.pdf
    • https://cdn.shopify.com/s/files/1/0434/5790/4792/files/38610458993.pdf
    • https://cdn.shopify.com/s/files/1/0434/5213/7622/files/wujasulekawaxam.pdf
    • https://cdn.shopify.com/s/files/1/0434/0465/6797/files/jipuranipoguzudubikof.pdf
    • https://cdn.shopify.com/s/files/1/0431/4411/8423/files/91322515614.pdf
    • https://cdn.shopify.com/s/files/1/0432/6480/2982/files/dunetif.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/free_line_graph_worksheets_4th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0432/8259/6008/files/kindergarten_addition_and_subtraction_worksheets_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8656/files/49567138140.pdf
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/fundamentals_of_acoustics_kinsler_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0462/2182/0058/files/widinelutopepefuxi.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_off00005732.bin
0c2b8c53a811854016a43b757e9006274cf7ca73fab7d77ac67e262b64e90bea
pdf-font-stream PDF embedded font (sfnt) at offset 0x5732 5884 bytes
font_01_sfnt_off00006b33.bin
0b38f6fd5e0b54bfa22d5adee1cfe00629fe134100fc7cfc1ad14a2ab7974207
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B33 6148 bytes
font_02_sfnt_off00007b13.bin
4455edf7ec0a0c1926803d7ab2eb62f0817926eef5c1906f8eb7bc36423446c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B13 10276 bytes