Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2cf5f1cdb85af66…

MALICIOUS

PDF

49.8 KB Created: 2020-08-07 08:18:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2b8ce6322fc2f3885b46cdf068cdee9 SHA-1: 0de96a0fa28a1e2af5eb6b1839b32cdcc6c3d469 SHA-256: e2cf5f1cdb85af662c21bd854b87823345466c2f22836c3053b650e3f90e739a
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a malicious redirector link, 'https://ttraff.cc/pify?keyword=states+and+capitals+of+world+list+pdf', which is likely used to obscure the final malicious destination. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains the text 'States and capitals of world list pdf' and the malicious URL, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=states+and+capitals+of+world+list+pdf
    • http://files.simheart.com/uploads/1/3/1/4/131407138/6892920.pdf
    • http://files.wichitafalls99s.com/uploads/1/3/2/3/132303219/4074751.pdf
    • http://files.meditation-magic.com/uploads/1/3/1/8/131871587/jatokajalusuz_rubekexanoziga_jojumiso.pdf
    • http://files.thaddeusproduction.com/uploads/1/3/1/8/131871902/gumatadevab_nozuxinirenu_nururigigofugu_lisesovevezod.pdf
    • http://files.apkzebra.com/uploads/1/3/0/7/130738993/8b23d.pdf
    • https://cdn.shopify.com/s/files/1/0447/3182/6325/files/andre_agassi_book_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7876/files/98356552576.pdf
    • https://cdn.shopify.com/s/files/1/0437/7640/9751/files/brisure_spontane_de_symtrie.pdf
    • https://cdn.shopify.com/s/files/1/0440/6404/7269/files/abdullah_jahangir_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67142307476.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977390730.pdf
    • https://cdn.shopify.com/s/files/1/0436/8069/4437/files/85121017048.pdf
    • https://cdn.shopify.com/s/files/1/0429/1395/6007/files/xadoviguxogoxedibemodi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9620/2652/files/94996226931.pdf
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/68973839187.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/34119597438.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_off0000786f.bin
92a0a0a2b089e94f3acf2319dc1e0a4a26d2f711ffbf53b4e554fb49bc1f1d3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x786F 5132 bytes
font_01_sfnt_off000089ee.bin
c8c739ae439388170d6613b29e4179ab673e9a2bd511b84c7a5bc6a21b5f95f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x89EE 9956 bytes
font_02_sfnt_off0000ac07.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xAC07 4324 bytes