Malicious PDF — malware analysis report

Static analysis result for SHA-256 397f19d005ce4023…

MALICIOUS

PDF

82.8 KB Created: 2020-08-08 19:37:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4879a806c7699f75f2087243362850b SHA-1: 1e08d614c61b400e43ecd62577d9ccd6cf60564f SHA-256: 397f19d005ce402318bbedb4d1b1d313054a793d6ae5cd034dfe1c900b07e8ea
160 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm, specifically employing an advance-fee scam lure. The document body, though heavily obfuscated, contains a URL that is also listed as a malicious redirector. This suggests the primary intent is to redirect the user to malicious infrastructure, likely for further exploitation or phishing.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.cc/pify?keyword=hunger+games+3+partie+2+pdf
    • http://files.moagabrielsson.com/uploads/1/3/1/3/131379183/repona.pdf
    • http://files.abwooddecor.com/uploads/1/3/1/8/131871740/zuzepu-mitajoxixit-nenod-kimubadede.pdf
    • http://files.tinglerart.com/uploads/1/3/1/3/131378993/migikugowus-puxesegutowipe.pdf
    • http://files.learningdifferencesresourcegroup.org/uploads/1/3/1/0/131070073/913418.pdf
    • https://cdn.shopify.com/s/files/1/0433/9187/7283/files/zuxijurireka.pdf
    • https://cdn.shopify.com/s/files/1/0431/1361/1413/files/24628749163.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/jatigatenunabeme.pdf
    • https://cdn.shopify.com/s/files/1/0432/3190/3902/files/52970285131.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/57663514035.pdf
    • https://cdn.shopify.com/s/files/1/0434/0475/5096/files/benares_michelin_starred_cooking.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4032/files/67166772624.pdf
    • https://cdn.shopify.com/s/files/1/0432/2577/6288/files/spherical_mirror_formula_derivation.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xakisone.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2892/3046/files/21407021539.pdf
    • https://cdn.shopify.com/s/files/1/0431/1774/0199/files/23427420651.pdf
    • https://cdn.shopify.com/s/files/1/0434/1733/8005/files/calendario_escolar_sep_2020_19_185_dias.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_off0000f991.bin
b2a22379af246158ee7097bdb849827e6849021ab7ad60cb0e33abd5ec5e7789
pdf-font-stream PDF embedded font (sfnt) at offset 0xF991 5588 bytes
font_01_sfnt_off00010c7e.bin
c328f840a92254918239518f7ec3cc5466280b5db4c125df790c90ed064f8b8a
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C7E 15712 bytes