Malicious PDF — malware analysis report

Static analysis result for SHA-256 047617be6af93e89…

MALICIOUS

PDF

46.8 KB Created: 2020-09-05 12:28:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fce65fb1c01ada64b79f9c65322f6ccc SHA-1: ef795d36a76bd26329543886b4e5944b76c7b978 SHA-256: 047617be6af93e89eea2d19420737e55357a2953dbf2f794405859b091586cac
194 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.me/wix?keyword=memorial+service+template+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to a memorial service template, suggesting a lure. The presence of numerous external PDF links, many pointing to benign content, alongside the malicious redirector, indicates a link farm strategy. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may also be intended to trick users into providing passwords for archives, a common tactic to bypass security scanning.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.me/wix?keyword=memorial+service+template+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/60933b_650f5bb91e82409c8db4c3463469d8ab.pdf
    • https://static.usrfiles.com/ugd/7c41c1_d72640dc121446029809e364bcce1650.pdf
    • https://static.usrfiles.com/ugd/0cd3a8_434ae1766909407fbaf5316cc4004f37.pdf
    • https://static.usrfiles.com/ugd/b8c837_cbda758230b241de9036bcb26d05e40c.pdf
    • https://static.usrfiles.com/ugd/b8c837_2573a8ca49564f4794e99fd2e96a94be.pdf
    • https://static.usrfiles.com/ugd/cac9e4_0564d5739037412ca5e03f0fd693586a.pdf
    • https://static.usrfiles.com/ugd/aaaf79_aa363086516f4fcd8122aa0ffddea069.pdf
    • https://static.usrfiles.com/ugd/b8c837_5764c5704b104971b7c20ceee43ed0e0.pdf
    • https://static.usrfiles.com/ugd/95089d_56d9c65abf184e2b9317b1c5545ee691.pdf
    • https://static.usrfiles.com/ugd/accd1f_84052455115f4abaac085ffab2b9b040.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000634f.bin
a95069b0774cb08a26df1e539edb2cef3f8385dcd620bbd9200b5502cfaaeacf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x634F 5368 bytes
font_01_sfnt_off0000758a.bin
d10303be3ac6801f0034e2160d6b26f5fe2fe43e2afafdf982d1c581959f6366		 pdf-font-stream PDF embedded font (sfnt) at offset 0x758A 10392 bytes
font_02_sfnt_off00009962.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9962 16164 bytes

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