Malicious PDF — malware analysis report

Static analysis result for SHA-256 0446c933d01eb2d3…

MALICIOUS

PDF

37.1 KB Created: 2020-04-01 23:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: af9a62c3e62449f0a28c69c0187c9907 SHA-1: e0d23db083967520daac292b557da3d7f99f2090 SHA-256: 0446c933d01eb2d3d131ceb6b26b39583b6ecdfa62ecd57e12afb09aa1f11316
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of these links, 'http://hennajalauri2019.com/uploads/1/3/0/4/130492127/130492127.html#minecraft+pe+servers+minigames', is directly visible in the document body. This suggests the document's primary purpose is to redirect users to potentially malicious websites, possibly for SEO spam or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://hennajalauri2019.com/uploads/1/3/0/4/130492127/130492127.html#minecraft+pe+servers+minigames
    • http://samayaproduction.com/uploads/1/3/0/8/130813731/6c422a4.pdf
    • http://rambow145.com/uploads/1/3/1/3/131381961/rakunivukot_guminib.pdf
    • http://northshorepaintinginc.com/uploads/1/3/0/5/130539084/mebapoketakipib-muzivisugosew-vuporemuwunerin-noxumilinimej.pdf
    • http://faithlutheranmarysville.org/uploads/1/3/0/2/130272573/4226870.pdf
    • http://richardbollo.com/uploads/1/3/0/8/130873737/lemivejatatavo-tozonenapozag-fawedi-biziwebulawelof.pdf
    • http://milieu-art.com/uploads/1/3/0/4/130489398/fubakimezewu-zajeledodud.pdf
    • http://www.ahoodsmokers.club/uploads/1/3/0/2/130288629/xitinukut.pdf
    • http://fresh-life-design.com/uploads/1/3/0/5/130588672/gelodexedadozo.pdf
    • http://mrsmellgoods.com/uploads/1/3/0/5/130540746/butomogusuvubi_fawarumuvifaf_wisuxudoxirasi.pdf
    • http://morrisadvofit.com/uploads/1/3/0/7/130775658/puwopas.pdf
    • http://canadiansforglobalcare.com/uploads/1/3/0/7/130776110/kosugirotenomal.pdf
    • http://gleamingangels.com/uploads/1/3/0/4/130489499/lanejav_bumoregakeje.pdf
    • http://chromationspec.com/uploads/1/3/0/5/130590496/c91ff.pdf
    • http://primeprosecurity.com/uploads/1/3/1/4/131453451/rotamer.pdf
    • http://myfriendq.com/uploads/1/3/0/3/130323381/gewolopibeziv.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068e9.bin
e4bb5f0f081a3fb3c058123fce921e085e6d1d165cff6b003f8c48f561ecc851		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E9 7424 bytes

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