Malicious PDF — malware analysis report

Static analysis result for SHA-256 e64ba152a9239c93…

MALICIOUS

PDF

42.8 KB Created: 2020-08-31 07:23:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e3ab8d43948d03b5f097203641cf141 SHA-1: 7962140616710aefa72d442ad4aa63bc75c299e9 SHA-256: e64ba152a9239c93440cbc0a3b059b4f51f2ad93ee3fe26f9cddcd22611b3218
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous other PDF links, many pointing to Shopify domains, indicates a link farm designed to improve search engine ranking for malicious content.

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/wix?keyword=buying+a+car+in+uk+guide
    • https://cdn.shopify.com/s/files/1/0436/0945/6803/files/tefobur.pdf
    • https://cdn.shopify.com/s/files/1/0431/8098/2432/files/55430494318.pdf
    • https://cdn.shopify.com/s/files/1/0437/4803/2666/files/sisobeduritowurapad.pdf
    • https://cdn.shopify.com/s/files/1/0428/5012/3943/files/safelijaxojarura.pdf
    • https://static.usrfiles.com/ugd/764aaa_5c963a120091440eb70d6b009add01b3.pdf
    • https://static.usrfiles.com/ugd/f46427_8ae2b8166b154e30a67215ec4aeca31a.pdf
    • https://static.usrfiles.com/ugd/f63f29_beb424e061c044f392ce6aa854b0aa61.pdf
    • https://static.usrfiles.com/ugd/fbccce_7f2fdb0d64bf442ea38978276141b1c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_a758d134404a45d2b039a9c8f01d132b.pdf
    • https://static.usrfiles.com/ugd/60933b_da0cdce8d22a47e3abd12b05137f5d77.pdf
    • https://static.usrfiles.com/ugd/b8c837_7fa446c470eb4569818538220fc8a54d.pdf
    • https://static.usrfiles.com/ugd/e2c250_6c965c7b454e4ac3a0537aaaf99ba2f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_dacb405f5c0948269e918c9157dbddd1.pdf
    • https://static.usrfiles.com/ugd/dc98cc_b22aa22811ea41c3a0a46423b60fca7e.pdf
    • https://static.usrfiles.com/ugd/b8c837_d338ef3bfea54650b258c3a3c51d4b70.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_off000069f3.bin
2b4a9b4c1b334737115e507a608322db1fd34dd0d6ee2b9e8cc0398dd056bcc5
pdf-font-stream PDF embedded font (sfnt) at offset 0x69F3 5112 bytes
font_01_sfnt_off00007b6d.bin
19be787345879d31f294239ce5e7160e09cc8ea6ed9b2ba567c94f40c3f2117d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6D 10228 bytes