Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d7996018313499f…

MALICIOUS

PDF

43.7 KB Created: 2020-08-08 22:19:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5d1fe59cbb6a147a51235eda9f06940 SHA-1: 7c61dbbe9aa162ec2498a977d75052c5b6677cc5 SHA-256: 4d7996018313499f8541c1d8fdb0298592c7e1d9f8c7b952eda748ca67b6eb9a
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body and heuristics indicate a lure to compare PDF documents, likely to trick users into clicking the malicious link. The presence of a visual download button further supports this phishing attempt. No scripts were extracted, limiting the analysis of further stages.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=compare%202%20pdf%20documents%20free
    • http://files.dassiedahan-author.com/uploads/1/3/0/7/130776483/kamega.pdf
    • http://files.kofc6065.org/uploads/1/3/2/8/132814463/8049474.pdf
    • http://files.top10filmlists.com/uploads/1/3/1/0/131071067/tejib.pdf
    • https://cdn.shopify.com/s/files/1/0449/3488/9627/files/acetylation_of_aromatic_amines.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mojarugalemidim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40429789840.pdf
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/67549535386.pdf
    • https://cdn.shopify.com/s/files/1/0440/8282/3333/files/animal_cell_and_plant_cell_difference.pdf
    • https://cdn.shopify.com/s/files/1/0440/8085/7253/files/43488255649.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/41245369217.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/bunipibegaguvepufejazi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6545/8336/files/real_easy_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/nodizex.pdf
    • https://cdn.shopify.com/s/files/1/0438/8611/7019/files/74304860727.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/xonobezi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/28754649362.pdf
    • https://cdn.shopify.com/s/files/1/0429/9885/7891/files/android_settings_put_secure_sysui_qs_tiles.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006352.bin
91ffef14428c0f289c7e3eb0c8f85c92ac08f7e8342314b6587e57de80043ea1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6352 5308 bytes
font_01_sfnt_off00007539.bin
73983ccd477f0e4c07634362c0f9f13a23cea415a26bff37f7f125d59a681190
pdf-font-stream PDF embedded font (sfnt) at offset 0x7539 1936 bytes
font_02_sfnt_off00007e7c.bin
e6000ee9265be6bec74ced72a040a8cc346d9dacfbd0d2b35bb4fd280aac91d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7C 10192 bytes