Malicious PDF — malware analysis report

Static analysis result for SHA-256 eabe8282918aea0b…

MALICIOUS

PDF

42.5 KB Created: 2020-08-02 21:48:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2256bbf187446b00fa6b90f8b27feea4 SHA-1: 868201a0f6c3ae558263985d97bcbfe0d63a279d SHA-256: eabe8282918aea0bdb7759629b35abdededea84aac1942dbe53aafcb1d3c144c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious Link: Malicious File

The PDF contains a link farm and a malicious redirector. The primary malicious URL, https://ttraff.cc/pify?keyword=remove+element+from+dictionary+python, is designed to redirect users to potentially harmful content. The document body text, though partially corrupted, includes this URL and other PDF links, suggesting a lure to trick users into clicking through a series of links. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=remove+element+from+dictionary+python
    • http://files.granbycumsutton.org/uploads/1/3/1/3/131380107/koluveselibawo_bazemelu_bitawajiton_ponerumur.pdf
    • http://files.adamhager.com/uploads/1/3/1/4/131406036/550c34.pdf
    • http://files.jblaw.ca/uploads/1/3/1/4/131452883/zemejisib_nunewawu_zusifinunokumef.pdf
    • http://files.juliaopawska.com/uploads/1/3/1/8/131871433/b496e21.pdf
    • http://files.hemingwaycottage.com/uploads/1/3/0/9/130969735/volupuk-sigorak.pdf
    • https://cdn.shopify.com/s/files/1/0437/4020/1109/files/veximixotuwetugebavimariz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5805/files/36596827677.pdf
    • https://cdn.shopify.com/s/files/1/0429/6992/3740/files/42062090597.pdf
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/12877021685.pdf
    • https://cdn.shopify.com/s/files/1/0428/4982/9023/files/kinulowurujiwupasugosik.pdf
    • https://cdn.shopify.com/s/files/1/0432/8253/0472/files/26766965862.pdf
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/49771301369.pdf
    • https://cdn.shopify.com/s/files/1/0437/1464/2070/files/vomepipel.pdf
    • https://cdn.shopify.com/s/files/1/0434/1868/1496/files/69253070399.pdf
    • https://cdn.shopify.com/s/files/1/0433/9528/5150/files/21556860841.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_off000067ed.bin
f54385e858704fddc883db2fc3171e9d2a1356ebe57a821f6d575f0101f48581
pdf-font-stream PDF embedded font (sfnt) at offset 0x67ED 5384 bytes
font_01_sfnt_off00007a24.bin
049a84309433deb25fab9c0d80d43b0c8ab98f3e9bc4edf3d1ac166fbc240514
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A24 10288 bytes