Malicious PDF — malware analysis report

Static analysis result for SHA-256 8360f0462d00069d…

MALICIOUS

PDF

52.6 KB Created: 2020-08-09 06:42:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7eaeb0e6ac4a882c4cb99e277cd3f921 SHA-1: b2aa4de29f3ac7a6bd33c540768cb7a3c6cdf671 SHA-256: 8360f0462d00069d957422e19d62f5301b44092b5aa9d5ea827caa7e79e49c16
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=allahabad+amar+ujala+news+paper+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are benign Shopify links but some point to unknown domains. The document body, though heavily obfuscated, contains the malicious URL. The presence of a 'download button' heuristic further suggests a lure to click the malicious link.

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=allahabad+amar+ujala+news+paper+pdf
    • http://files.zhuangguo94.com/uploads/1/3/1/6/131637372/2998644.pdf
    • http://files.aaronpuppe.com/uploads/1/3/1/4/131455543/51580a6745347.pdf
    • http://files.mosholudaycamp.com/uploads/1/3/1/4/131453871/nikezavexonigare.pdf
    • https://cdn.shopify.com/s/files/1/0435/6636/6869/files/adosphere_cahier_d_activits.pdf
    • https://cdn.shopify.com/s/files/1/0428/5258/1542/files/10501697283.pdf
    • https://cdn.shopify.com/s/files/1/0435/8412/7135/files/kenmore_sewing_machine_model_158.pdf
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/8646398048.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/najas.pdf
    • https://cdn.shopify.com/s/files/1/0432/2715/2539/files/html_mailto_link.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75320426607.pdf
    • https://cdn.shopify.com/s/files/1/0438/2805/2130/files/kexawosum.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/guwomupaba.pdf
    • https://cdn.shopify.com/s/files/1/0428/0506/7943/files/mejunepogiwijakan.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/nifumexawavojip.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000697c.bin
4fdc9322333b5a12077b05f5c8de94539817cfc66da61437c7f4de8145ecadec
pdf-font-stream PDF embedded font (sfnt) at offset 0x697C 5224 bytes
font_01_sfnt_off00007b1c.bin
4082b61c06a66c7a31b463643b280a99e556e4126417704c1b4253f2a8fd58e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B1C 12152 bytes
font_02_sfnt_off0000a2f5.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2F5 4324 bytes
font_03_sfnt_off0000b0f5.bin
db1e69ae29ad3704ad798c82c4f8b32d888824b28e97f2eeb0970809b62d1d5a
pdf-font-stream PDF embedded font (sfnt) at offset 0xB0F5 5692 bytes