Malicious PDF — malware analysis report

Static analysis result for SHA-256 9150c3e2e513f98f…

MALICIOUS

PDF

43.0 KB Created: 2020-08-20 21:03:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0645d2a12f486756955c4eb28f0a491d SHA-1: 841245e08f73682c1c85788d8d65dd0f38eea1af SHA-256: 9150c3e2e513f98f4ef1271811b1913da09146138ffe730bde59b5d656c31265
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=cervical+spine+exercises+pdf', is designed to redirect users to malicious content. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify, likely for SEO manipulation to increase visibility. No scripts were extracted, but the primary malicious intent appears to be the redirection via the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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=cervical+spine+exercises+pdf
    • http://files.spinnakerspiritualdirection.com/uploads/1/3/0/8/130874257/4727064.pdf
    • http://files.klemenspulsers.com/uploads/1/3/1/3/131382470/7237376.pdf
    • https://cdn.shopify.com/s/files/1/0433/4796/8149/files/xipogipizog.pdf
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/wevipepowurax.pdf
    • https://cdn.shopify.com/s/files/1/0436/9498/1273/files/fisiopatologia_del_cancer_de_lengua.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/bombardier_dash_8_q400_flight_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0763/0747/files/19984052184.pdf
    • https://cdn.shopify.com/s/files/1/0429/1988/7001/files/92955230504.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9730/files/jixajapapusomawisorapakav.pdf
    • https://cdn.shopify.com/s/files/1/0437/5317/7237/files/pengertian_application_programming_interface.pdf
    • https://cdn.shopify.com/s/files/1/0429/4619/9711/files/12377419514.pdf
    • https://cdn.shopify.com/s/files/1/0433/9659/5861/files/python_interview_questions_and_answers_for_experienced_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/2666/7925/files/38544441538.pdf
    • https://cdn.shopify.com/s/files/1/0437/8555/2030/files/how_to_play_arpeggios_on_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0430/0577/1939/files/9723732738.pdf
    • https://cdn.shopify.com/s/files/1/0430/1275/1523/files/doweb.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_off00006ba5.bin
8edc629f6d0f1c86c87ee391dc50f837f939a44306bf04c78ae092640d1a8558
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA5 5180 bytes
font_01_sfnt_off00007d51.bin
3b716c483fac80f16e358eaac6f3b81d2dece13f760e2b153622afffe9aef5a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D51 9804 bytes