Malicious PDF — malware analysis report

Static analysis result for SHA-256 bae45e7d6b2cc57b…

MALICIOUS

PDF

53.9 KB Created: 2020-08-12 03:20:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6144159fcaf12eb1ad0e80236afa34bb SHA-1: 3d49d7d9bf59e2e0e0308d2d1a204f2f10547c08 SHA-256: bae45e7d6b2cc57b5d485bd3e4faa9c3f086ca88d4b8821a167e4b8cfc7c2f94
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=inter+ethnic+conflict+in+africa+pdf'. This suggests the document is designed to redirect users to malicious sites. The document body, though heavily obfuscated, contains this URL, reinforcing the malicious intent. The presence of numerous external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

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/pify?keyword=inter+ethnic+conflict+in+africa+pdf
    • http://files.kimberleypalmer.com/uploads/1/3/1/3/131384286/439688.pdf
    • http://piluteko.fabcreteindustries.com/uploads/1/3/1/3/131384281/werere.pdf
    • http://files.casapaloma2.org/uploads/1/3/0/8/130873758/wutij-jibip.pdf
    • http://files.professorwillis.com/uploads/1/3/0/9/130969819/3536095.pdf
    • http://xunuxoxem.humanitaseagleeye.org/uploads/1/3/1/4/131453416/3b39f1.pdf
    • https://cdn.shopify.com/s/files/1/0435/3556/4949/files/27529705218.pdf
    • https://cdn.shopify.com/s/files/1/0448/2993/3725/files/47764060945.pdf
    • https://cdn.shopify.com/s/files/1/0429/7588/7523/files/99593368619.pdf
    • https://cdn.shopify.com/s/files/1/0450/5023/2984/files/casework_relationship.pdf
    • https://cdn.shopify.com/s/files/1/0432/2328/5920/files/sexerenogarezutig.pdf
    • https://cdn.shopify.com/s/files/1/0431/0886/0065/files/xejuxigovifavuburemomab.pdf
    • https://cdn.shopify.com/s/files/1/0431/2137/7434/files/nimesu.pdf
    • https://cdn.shopify.com/s/files/1/0446/0825/8211/files/pdf_xchange_viewer_toolbar.pdf
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/37371667021.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gijamibumiji.pdf
    • https://cdn.shopify.com/s/files/1/0436/5231/7342/files/adele_someone_like_you_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0437/5874/7800/files/valkyrie_profile_walkthrough_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/gibisiguvujidatitixa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/83010700987.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_off00008a34.bin
9545bb88c8f42668e5a363ba09bf2333ddadd7ee4fe46e641de0fb8ec68b63b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A34 4792 bytes
font_01_sfnt_off00009a5f.bin
ae03dccce02aa7cb53cffb68d5a8341087459d5becfd43eea857e4f85dede5e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A5F 9876 bytes
font_02_sfnt_off0000bc33.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xBC33 4324 bytes