Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ba2c62ad431ca00…

MALICIOUS

PDF

63.1 KB Created: 2020-08-12 12:31:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e91c85080d263145ae065516b41dbb2b SHA-1: 5e20a3361e3d6531ec1a58757cf7a5a1fc6ac8be SHA-256: 6ba2c62ad431ca003fcfef165003aff7280897aa3af0a42c2022a09e681871ef
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains a URL that leads to a known malicious redirector. This suggests the document is designed to lead users to malicious sites, likely for further exploitation or phishing.

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=maharashtra+apartment+ownership+act+1970+pdf
    • http://files.monicaburtonyoga.com/uploads/1/3/2/3/132303219/9224275.pdf
    • http://lusozejip.aeea4u.org/uploads/1/3/0/8/130874043/936819.pdf
    • http://files.barbaragraystudio.com/uploads/1/3/1/4/131407227/fakemupufanazo_vedatokuki.pdf
    • http://files.officermnop.com/uploads/1/3/0/8/130813650/giduxidepinit.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5857/7056/files/zevefibunaker.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/gijugujasafonajifikul.pdf
    • https://cdn.shopify.com/s/files/1/0432/3062/5950/files/55121159294.pdf
    • https://cdn.shopify.com/s/files/1/0434/5895/3369/files/xuketawelogu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3313/3209/files/64115949253.pdf
    • https://cdn.shopify.com/s/files/1/0437/3771/0744/files/46977333205.pdf
    • https://cdn.shopify.com/s/files/1/0429/6415/6582/files/dirufibem.pdf
    • https://cdn.shopify.com/s/files/1/0434/0665/5642/files/vegaparatijit.pdf
    • https://cdn.shopify.com/s/files/1/0436/1152/1187/files/2017_ram_2500_owners_manual.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_off0000b998.bin
06ed1e74ada2bd7b02c56de61fac71f8a832f450166bca190b41a1e9b5fcabe1
pdf-font-stream PDF embedded font (sfnt) at offset 0xB998 5892 bytes
font_01_sfnt_off0000cda3.bin
496e113fd690a2c334a6ea71b64cf15c5ae98ddb250b1108e80602c828f240c6
pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA3 9980 bytes