Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bd70d5066571379…

MALICIOUS

PDF

65.3 KB Created: 2020-09-01 06:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4677112479a2c3109a70ed4968021ebc SHA-1: 949e20cfd5e66152de94801f629ac3803cda4bda SHA-256: 1bd70d50665713799793b5925c465c2ac9eb6981f047524c09720b7e0c483a74
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate accounting documents, but the primary link redirects to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the embedded URL 'https://ttraff.com/wix?keyword=akuntansi+dasar+1+dan+2+pdf' leads to malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic further suggests a pattern of generating numerous links to obscure the malicious intent. No scripts were extracted from this sample.

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.com/wix?keyword=akuntansi+dasar+1+dan+2+pdf
    • https://static.usrfiles.com/ugd/37321e_3d2a9cc0d89e45f2851e14020f20ee4e.pdf
    • https://static.usrfiles.com/ugd/b8c837_e205eb3363e2408e819946be9afc4edc.pdf
    • https://static.usrfiles.com/ugd/e2f7e1_dd460ec1b1b54b5abef52e20301ec24a.pdf
    • https://static.usrfiles.com/ugd/bf650e_6d89312a97c14e7dbca29b4c2564ed73.pdf
    • https://static.usrfiles.com/ugd/ee6770_34c9617152d34d16bd5723962d42bd38.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6680/files/thrust_bearing_skf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/94027860514.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/48758765137.pdf
    • https://cdn.shopify.com/s/files/1/0433/6166/5192/files/bloody_spell_dlc.pdf
    • https://cdn.shopify.com/s/files/1/0437/3266/4481/files/pafojizawaxusur.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/tarufudadobozovag.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_off0000b5ba.bin
a1fe32bb4c0d91f32b323f6c00623ed4bdc75ea265c30496d7e3fcc235c84399		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5BA 4896 bytes
font_01_sfnt_off0000c664.bin
6eaba9b31611dffc85f2badb911b9225beeadcab435a0ee8071838e3ca4fdf86		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC664 10456 bytes
font_02_sfnt_off0000ea3a.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3A 4324 bytes

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