Malicious PDF — malware analysis report

Static analysis result for SHA-256 504262e041c20567…

MALICIOUS

PDF

831.2 KB Created: 2020-07-12 22:27:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58686db93fc74619687461125052d3a7 SHA-1: 2b2c73cb0c2be01f126d572919caaa70ea5587dc SHA-256: 504262e041c20567f6f74c3e472080661e155cfd01d8a9586fb8c29448adc3ec
68 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, suggests a lure related to a 'building construction book'. The presence of urgency language further supports a phishing or social engineering attack. The primary IOC is the malicious redirector URL.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wb?keyword=building%20construction%20book%20by%20barry%20pdf
    • http://files.maidtoshineservices.net/uploads/1/3/1/4/131437268/29f33e.pdf
    • http://files.rajahmaples.com/uploads/1/3/1/6/131637658/lizoguf.pdf
    • http://files.mylakehillsreserve.com/uploads/1/3/1/8/131856052/9784b.pdf
    • http://files.rvhh.com/uploads/1/3/1/0/131070062/vebipuwujewisut-tulobevavozopim.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
    • https://cdn.shopify.com/s/files/1/0432/6280/4136/files/tifunuzaxos.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/zudenefesijerumivez.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/gesegojowarapitin.pdf
    • https://sigigokureti.files.wordpress.com/2020/06/54953795168.pdf
    • https://luxotamataxo.files.wordpress.com/2020/07/rawuwomuv.pdf
    • https://fesajaj.files.wordpress.com/2020/07/daridafuxijorafa.pdf
    • https://julabifefo633366968.files.wordpress.com/2020/06/27095096649.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/demajeseta.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/daduwozurenunuke.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/razikeruranofe.pdf
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/nuwemipowagegupisaligati.pdf
    • https://cdn.shopify.com/s/files/1/0431/6554/8705/files/xuloxuzozuxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/vasuvonowarefaditolage.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sutapazuvonovojikujabera.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/vemamavonepawuzegufotutaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/0026/5878/files/webiketusuzosasaverig.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_off000cb3c2.bin
03492dbc4e1ed1053e143a3b86d0e90d8aa2671884b386a7f91cd6c6b9bb6d1a
pdf-font-stream PDF embedded font (sfnt) at offset 0xCB3C2 5444 bytes
font_01_sfnt_off000cc656.bin
4428e4a4c0cfbc300924a4b1301dc566cf4cf22a32eb2b0a6685555523eb0445
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC656 10652 bytes