Malicious PDF — malware analysis report

Static analysis result for SHA-256 67e3c842261957f1…

MALICIOUS

PDF

41.7 KB Created: 2020-09-01 09:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c35c3be28212f12c49aa82edd66f440b SHA-1: 953992a9ab3bb2a53105aba67f5ad9023ddf5add SHA-256: 67e3c842261957f1ca30e5081028ed28071717a8f7ad0f0ec6659141720ee491
154 Risk Score

Malware Insights

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

This PDF document contains a link disguised as a service guide, likely intended to trick users into clicking it. The link leads to a known malicious redirector infrastructure. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content, potentially for phishing or malware distribution.

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=andersen+windows+service+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/c068f8_3035e2fe41f848c696424914c8cdef4d.pdf
    • https://static.usrfiles.com/ugd/b8c837_c4ba4d94663945188c53ab2d047448fd.pdf
    • https://static.usrfiles.com/ugd/217d68_93e1b90b688c4d869ce43afddb93a026.pdf
    • https://cdn.shopify.com/s/files/1/0432/5782/3390/files/negekatomuwavupesige.pdf
    • https://cdn.shopify.com/s/files/1/0431/4116/9309/files/cooling_tower_manual_cti.pdf
    • https://cdn.shopify.com/s/files/1/0437/9118/8117/files/nejevon.pdf
    • https://cdn.shopify.com/s/files/1/0429/1071/1971/files/88616381208.pdf
    • https://cdn.shopify.com/s/files/1/0434/7854/8630/files/basic_violin_notes.pdf
    • https://cdn.shopify.com/s/files/1/0465/1991/0558/files/63132605446.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/6496485372.pdf
    • https://static.usrfiles.com/ugd/b8c837_222deceaae0748d1927b6cf8a0228f86.pdf
    • https://static.usrfiles.com/ugd/353d00_cc7a096c21c243aca61987c778276337.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb41f56f20284fd1bd2da0908d5b210d.pdf
    • https://static.usrfiles.com/ugd/b8c837_d224297b83204df286bf3ea34a045d72.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_off000065c9.bin
a39dd08938495fa61807dd039e29fb71ba104b04fc989e28d25c74fad4c553dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x65C9 5004 bytes
font_01_sfnt_off000076f8.bin
ab7bbe38d6d6c3b03a350c41e48416197e5e5d40d4bc93619a2bde5182d4f890
pdf-font-stream PDF embedded font (sfnt) at offset 0x76F8 10352 bytes