Malicious PDF — malware analysis report

Static analysis result for SHA-256 d438caca75af5119…

MALICIOUS

PDF

37.4 KB Created: 2020-08-15 21:49:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e0de5e1106971092c12f952d9c99acc SHA-1: fe28e4a8e9ddd7f9012dfb400fb538a182f6b4b2 SHA-256: d438caca75af5119717405ebc7b7166c27bc07438464b0ed69cffaf3cb9eb160
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a link farm, indicating an attempt to drive traffic to malicious sites. The presence of a download button lure further supports a social engineering attack. The primary malicious URL identified is ttraff.cc, which is known for redirecting to malicious content.

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.cc/wb?keyword=heads%20you%20win%20jeffrey%20archer%20pdf%20download
    • http://files.boprh.net/uploads/1/3/1/0/131070178/9063526.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/zumijizofolamovekej.pdf
    • https://cdn.shopify.com/s/files/1/0433/7565/7125/files/triple_integrals_in_cylindrical_and_spherical_coordinates.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wesuwalaloluxafim.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/getulesujarixidorafumobu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7920/files/tolefajovixineninu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3988/2402/files/between_the_sheets_manga_chapter_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/kaxigagokusinijomu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0994/9341/files/zadutejemuboziwo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/carcinoma_basocelular_elsevier.pdf
    • https://cdn.shopify.com/s/files/1/0430/7560/0535/files/werexu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5045/8526/files/jukek.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/suton.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_off00005444.bin
dad47409d67b8871f0c273a721db674ba868e72f0112c2d5b614cc1bb960cd32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5444 5476 bytes
font_01_sfnt_off000066f0.bin
69707081e1ab1c0aa7b1064fa71539cc36a38657a52dcc661c329d08aad0b91d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F0 9928 bytes

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