Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa9b9425aae43117…

MALICIOUS

PDF

45.9 KB Created: 2020-08-14 05:44:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97e7bbc7855c49ab0577a09fca0e8d85 SHA-1: 0f9bdd37b2826c9c828079ac99283a2a516b7196 SHA-256: fa9b9425aae43117e54829bc633505e341a6766b9f8f790f9c4f4ec1f86019cd
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=bollywood+songs+djmaza' and a call-to-action phrase suggesting a lure. The presence of a 'download button' heuristic further supports the social engineering aspect. The file is classified as a malicious redirector due to the critical heuristic firing.

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.cc/pify?keyword=bollywood+songs+djmaza
    • http://vizas.mhpps.org/uploads/1/3/0/7/130738524/3689052c5967e5.pdf
    • http://files.authenticstonecreations.com/uploads/1/3/2/8/132815054/6674558.pdf
    • http://gamuke.sojofireproject.org/uploads/1/3/0/7/130776167/48bda1ad87d0.pdf
    • https://cdn.shopify.com/s/files/1/0435/3395/9327/files/nutritional_anthropology.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/permissions_for_ssh_key.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/19388962886.pdf
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/tujuxuk.pdf
    • https://cdn.shopify.com/s/files/1/0439/4024/9755/files/msi_x370_sli_plus.pdf
    • https://cdn.shopify.com/s/files/1/0432/0909/7384/files/46595505011.pdf
    • https://cdn.shopify.com/s/files/1/0434/1602/7303/files/carcinoma_epidermoide_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42632515291.pdf
    • https://cdn.shopify.com/s/files/1/0435/6489/2323/files/familia_casuarinaceae.pdf
    • https://cdn.shopify.com/s/files/1/0429/7064/4631/files/aptitude_test_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/4447/6840/files/52728486091.pdf
    • https://cdn.shopify.com/s/files/1/0437/1464/2070/files/7356551130.pdf
    • https://cdn.shopify.com/s/files/1/0434/6583/4658/files/27314366444.pdf
    • https://cdn.shopify.com/s/files/1/0434/0265/7957/files/60167256237.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_off00005c18.bin
567a6936c73509189f1235ac321a8472eb7651d1f66d83d320751354ace99190
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C18 5420 bytes
font_01_sfnt_off00006e96.bin
56b77a7886b855a615e92ff1d01f6c4be40806c77544e38954882b415f07f3f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E96 10256 bytes
font_02_sfnt_off000091f0.bin
c838e6c531bcc36cab1600fa7b12fc2ace679e84141fb45a9c5fd0c595984d84
pdf-font-stream PDF embedded font (sfnt) at offset 0x91F0 17036 bytes