Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0cce1f3a01813a2…

MALICIOUS

PDF

43.1 KB Created: 2020-08-28 00:53:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c705afccfa3a2fb4d7e12edc2b95cbd SHA-1: 771f66f34aef7d341b401c1c604eeb92d6726505 SHA-256: e0cce1f3a01813a2d63b2441843dcf84d912c81fb4508dbde9b297d51159778e
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=best+technical+indicators+for+swing'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links pointing to external resources, including a significant number hosted on cdn.shopify.com. The ML classifier also strongly flagged this PDF as malicious. The document body contains the same redirect URL, reinforcing the lure.

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.com/pify?keyword=best+technical+indicators+for+swing
    • http://sumuvo.victhornley.com/uploads/1/3/1/4/131453574/2fb115f589.pdf
    • https://cdn.shopify.com/s/files/1/0436/6876/6873/files/61785060713.pdf
    • https://cdn.shopify.com/s/files/1/0434/3051/0758/files/hackerrank_solutions_in_c.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/96483055231.pdf
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/xavufuvopasujetegugevo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2132/6742/files/tidekaxetalikuvat.pdf
    • https://cdn.shopify.com/s/files/1/0431/2409/7191/files/rijulovigevolobabaromanop.pdf
    • https://cdn.shopify.com/s/files/1/0434/7687/7478/files/63848587560.pdf
    • https://cdn.shopify.com/s/files/1/0431/3346/8839/files/merrill_lynch_beneficiary_designation_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2563/files/32522047700.pdf
    • https://cdn.shopify.com/s/files/1/0438/0770/3201/files/88161222258.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_off00006a23.bin
6d9e164f9a7ef21cbc7712a1f68877c9bac9f70de031db1942afdbec98dcc828
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A23 5424 bytes
font_01_sfnt_off00007c9c.bin
d347dd71a8663b395a1acb02ac462b04b1fc258a53b6b27ed78b76a62a7036ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9C 10212 bytes