Malicious PDF — malware analysis report

Static analysis result for SHA-256 3337a8f2f41af25d…

MALICIOUS

PDF

41.4 KB Created: 2020-09-17 11:22:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48bae6bde649b230a25a9fae86c493a3 SHA-1: ec4ef736a8928523e5437ab3e88b3d06ca1f33e1 SHA-256: 3337a8f2f41af25df10da291d2c92fafbcca7d90782305dea1199f9d5f37be69
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to create a link farm or distribute content through numerous indirect URLs. The primary malicious URL is https://ttraff.club/wix?keyword=empty+chair+at+the+table+poem, which is likely used for phishing or to redirect to further malicious content.

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.club/wix?keyword=empty+chair+at+the+table+poem
    • https://cdn.shopify.com/s/files/1/0482/9701/7506/files/liftarens_guide_till_galaxen_marvin_citat.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/hygroma_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0431/4152/9762/files/25091778893.pdf
    • https://25310475-e53b-4852-b11d-7e6c48943294.filesusr.com/ugd/d2759c_bc87049fa9174054b7da2a97482ee81d.pdf?index=true
    • https://2ec37e12-ae2b-4c83-b474-6ad9cf1a6579.filesusr.com/ugd/a42eed_b9ee21b996e7462ca62febccfc210546.pdf?index=true
    • https://a0fb4a6d-b5ff-4cbf-9c81-48a550eaa632.filesusr.com/ugd/d9f7b5_c3d61485523a4d2cb8631695113c0a75.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0432/1034/2564/files/ljn_wrestling_figures_price_guide.pdf
    • https://cdn.shopify.com/s/files/1/0460/6001/1675/files/tissue_types_chart_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/ajouter_mot_dictionnaire_android.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97454987384.pdf
    • https://cdn.shopify.com/s/files/1/0464/0463/2731/files/destiny_2_pc_settings_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6548/3168/files/33572020241.pdf
    • https://cdn.shopify.com/s/files/1/0480/6406/9796/files/beauty_camera_apk_latest_version_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/4189/7113/files/71279695461.pdf
    • https://cdn.shopify.com/s/files/1/0433/9607/1589/files/hills_k_d_diet_feeding_guide.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_off00006415.bin
aa3711f87ca1104283d6f43ca4dbdb6f62684b6a1cd5608dd7ef89afab544b1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6415 5192 bytes
font_01_sfnt_off0000759a.bin
c9a267bec5dfcaa383aa3cc675eaf17cf01a80ad4c8a5db35617ec7dd9cd3505
pdf-font-stream PDF embedded font (sfnt) at offset 0x759A 10260 bytes