Malicious PDF — malware analysis report

Static analysis result for SHA-256 078f218144951659…

MALICIOUS

PDF

53.5 KB Created: 2020-06-04 00:22:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62d761ba444376fdf973e04f79a7ec93 SHA-1: fa2e98af212c93a0b7951e6f179af3e6013ea9e7 SHA-256: 078f218144951659017268549651fd325a35d8a59d2f6a6098cfb121c57cfca8
136 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDFs, suggesting a link farm or redirection scheme. The document body, though heavily obfuscated, contains a URL that matches one of the extracted links, indicating a potential lure to a malicious site. The presence of a 'Password-protected archive handoff' heuristic suggests that this PDF may be intended to trick users into downloading an archive that requires a password, which is often provided separately to bypass security filters.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://junobeautyhairandcare.com/uploads/1/3/0/2/130272372/130272372.html#brackets+de+autoligado+ventajas+y+desventajas+pdf
    • http://lion-and-hiyoko-sp.com/uploads/1/3/0/3/130313507/9bb4d11e559.pdf
    • http://autodiscover.theoffsideflag.com/uploads/1/3/1/4/131454501/pejewaxararozuvune.pdf
    • http://webmailnetcenter.com/uploads/1/3/0/6/130620880/71614238be.pdf
    • http://11onthe11th.com/uploads/1/3/1/0/131070476/xonomi-zopive-digusiforevi-xekowo.pdf
    • http://fossilsuk.co.uk/uploads/1/3/0/9/130969384/1874185.pdf
    • http://mudiyang.com/uploads/1/3/0/5/130539458/d3619ccf0a8.pdf
    • http://timoschmid.com/uploads/1/3/1/6/131606511/e7427c.pdf
    • http://thefreedomroots.com/uploads/1/3/0/2/130270902/jivowotuwudojoviramo.pdf
    • http://soundmusicaccord.com/uploads/1/3/0/4/130483286/4846559.pdf
    • http://junobeautyhairandcare.com/uploads/1/3/0/2/130272372/terms.html
    • http://junobeautyhairandcare.com/uploads/1/3/0/2/130272372/dmca.html
    • http://junobeautyhairandcare.com/uploads/1/3/0/2/130272372/policy.html
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://molozujepaxu.files.wordpress.com/2020/06/55765257551.pdf
    • https://mijoxumivibu248704507.files.wordpress.com/2020/06/70397468890.pdf
    • https://gavumafan.files.wordpress.com/2020/06/pujuvutexogodinemoxe.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a0e2.bin
7b836ddf4118a498cfb80b5e2c86bebf87bc9c87ea447b4d22eb3dd02b84fb6f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0E2 12156 bytes