Malicious PDF — malware analysis report

Static analysis result for SHA-256 f28583f1ff4bb0fe…

MALICIOUS

PDF

44.8 KB Created: 2020-08-21 02:05:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74223b1fe15bc4aea849a9b15ec62a58 SHA-1: 3de4b3e1d48c7f3973bd83ca187c2b3b0f006eec SHA-256: f28583f1ff4bb0fea98f76070c16d0b12c95e67ffa3db01f67f48e9e93dddb95
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=cinemagraph+pro+android'. This URL is presented within the document body, disguised as a download for 'cinemagraph pro android'. The PDF also contains a link farm heuristic, with numerous external PDF links, some of which point to potentially malicious domains. The primary intent appears to be directing users to malicious infrastructure via a deceptive link.

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=cinemagraph+pro+android
    • http://files.netherlandsandcoloniesrevenues.com/uploads/1/3/0/8/130874620/sunofunonowisi-vipakisizup-tovokonirak.pdf
    • http://files.christophervonspitzer.com/uploads/1/3/0/7/130739155/6994799.pdf
    • https://cdn.shopify.com/s/files/1/0431/4352/8609/files/obtenir_attestation_de_formation_aux_premiers_secours.pdf
    • https://cdn.shopify.com/s/files/1/0432/8590/5576/files/machine_learning_from_theory_to_algorithms.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69296453687.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/alteryx_designer_admin.pdf
    • https://cdn.shopify.com/s/files/1/0437/9947/8434/files/charbroil_oilless_turkey_fryer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/4610/0374/files/76752764184.pdf
    • https://cdn.shopify.com/s/files/1/0435/3861/2378/files/99476313023.pdf
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/exercicios_de_geometria_angulos.pdf
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/dibisalik.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/labview_core_3_course_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1256/2849/files/florida_renters_lease_agreement_form.pdf
    • https://cdn.shopify.com/s/files/1/0459/7248/8359/files/remimakuzosuzogulikab.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_off000071c1.bin
3de4cc06bad1d063dea4d37124ca7d04e91e40536764304c24eb5e7fc6747830		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71C1 5068 bytes
font_01_sfnt_off000082c7.bin
f2b02d1967e0486fd94c1a7666c2a5a5dd4550365497f718a4062ccd83228154		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82C7 10444 bytes

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