Malicious PDF — malware analysis report

Static analysis result for SHA-256 11692a9bd3979335…

MALICIOUS

PDF

40.9 KB Created: 2020-07-29 07:46:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4df4673d32f148e5ee884bba8d51ffdd SHA-1: f13230d90dca5b9404f2e51f42b533a4c58b9679 SHA-256: 11692a9bd39793359eff82c5d6b323aa608dfe72bd12fc7a5f24514fd216b23d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'surf report'. The presence of multiple external PDF links, including one pointing to a redirector, indicates an attempt to lead the user to malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=bethany+beach+surf+report
    • http://files.martinprice.ca/uploads/1/3/2/6/132696194/1375248.pdf
    • http://files.mndeathcollaborative.com/uploads/1/3/1/8/131871786/a0d16d8.pdf
    • http://files.positivitymagic.com/uploads/1/3/0/7/130738752/vakebuxetul.pdf
    • http://files.orlandopenamusic.com/uploads/1/3/2/7/132712139/zisijarusevarusi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/1395/6007/files/fewodanafe.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4011/files/texegogozefizu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81858120772.pdf
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/34990953335.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/wokuxa.pdf
    • https://cdn.shopify.com/s/files/1/0429/9948/0473/files/lapawozijonerisurusam.pdf
    • https://cdn.shopify.com/s/files/1/0431/1315/2673/files/tenememunegedipugi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/selozumeto.pdf
    • https://cdn.shopify.com/s/files/1/0434/4270/0455/files/sudipefinor.pdf
    • https://cdn.shopify.com/s/files/1/0435/8340/6243/files/dafazof.pdf
    • https://cdn.shopify.com/s/files/1/0433/8089/9989/files/wuxuwezuxefomuxapaxafeni.pdf
    • https://cdn.shopify.com/s/files/1/0436/0755/6258/files/98827718134.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9020/files/63239502237.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000630e.bin
cddefd3f6775f8ecbee342da55b54e310af6d80463efb501947b32d73d01b898		 pdf-font-stream PDF embedded font (sfnt) at offset 0x630E 5196 bytes
font_01_sfnt_off000074ab.bin
9064c6b9b59b9e08d93d20d4f53044d2966ad3c69d9217df797e15fd97e65303		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74AB 9864 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.