Malicious PDF — malware analysis report

Static analysis result for SHA-256 4289bcc3565d0e13…

MALICIOUS

PDF

51.0 KB Created: 2020-03-29 14:54:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: ce52d34cc9b45f1e2db072c4b6095d73 SHA-1: b8f67783774acb1f269688e7a9e2c8ea9af34c28 SHA-256: 4289bcc3565d0e13e3c3449a8c7a5f23f8fbae9209c5a1774da29400708ad7b2
96 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are structured as SEO spam, pointing to other PDF files. The primary URL in the document body, http://74-123-77-82.mgwnet.com/uploads/1/3/0/9/130969407/130969407.html#grimgar+of+fantasy+and+ash+light+novel+volume+13, suggests a lure related to popular media to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it being used to distribute further malware or engage in phishing.

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://74-123-77-82.mgwnet.com/uploads/1/3/0/9/130969407/130969407.html#grimgar+of+fantasy+and+ash+light+novel+volume+13 PDF link annotation
    • http://professorsandcraftsmen.com/uploads/1/3/0/6/130639073/6d7ca68155094.pdfIn PDF document text
    • http://gainstorming.org/uploads/1/3/0/5/130588633/zuluwafelewom_zulado_kogiduxopebe.pdfIn PDF document text
    • http://dngraphicshawaii.com/uploads/1/3/0/8/130874018/dokiletonitag-jomelokagagar-vigufa-kiwewufedegefig.pdfIn PDF document text
    • http://akcustomart.com/uploads/1/3/0/2/130291800/cc41d.pdfIn PDF document text
    • http://djlakrao.com/uploads/1/3/0/6/130604799/545cf21.pdfIn PDF document text
    • http://bearsswimschool.com/uploads/1/3/0/4/130488565/5880886.pdfIn PDF document text
    • http://primesystemstech.com/uploads/1/3/0/7/130740517/wepopoge.pdfIn PDF document text
    • http://moodstylehaus.com/uploads/1/3/1/4/131410094/dixuzepobole.pdfIn PDF document text
    • http://atticusai.com/uploads/1/3/0/6/130621296/2397318.pdfIn PDF document text
    • http://publi4.net/uploads/1/3/0/7/130775510/mimoju-jobadafitu-zatufetetatade.pdfIn PDF document text
    • http://road2raw.com/uploads/1/3/0/7/130739474/vevezimizegoziladoso.pdfIn PDF document text
    • http://crablefoundation.org/uploads/1/3/0/6/130639977/8226611.pdfIn PDF document text
    • http://churchesformentalhealth.com/uploads/1/3/0/5/130590157/vuvede.pdfIn PDF document text
    • http://simplyirresistabledelights.com/uploads/1/3/0/4/130477719/penoximolejego.pdfIn PDF document text
    • http://med-impulse.ru/uploads/1/3/0/5/130551342/7668833.pdfIn PDF document text
    • http://empower-the-youth.org/uploads/1/3/0/2/130287488/3708dae7df48ee.pdfIn PDF document text
    • http://pyktures.com/uploads/1/3/0/6/130639603/gedila_futiziwa.pdfIn PDF document text
    • http://www.alchemy-unlimited.com/uploads/1/3/0/3/130323762/d6594b9f73d8.pdfIn PDF document text
    • http://castlemender.net/uploads/1/3/1/0/131071127/8977c898552.pdfIn PDF document text
    • http://planotimesavers.com/uploads/1/3/0/3/130313398/kunekowa.pdfIn PDF document text
    • http://michelledrumheller.com/uploads/1/3/0/7/130776760/8831035.pdfIn PDF document text
    • http://centralvalleywomensexpo.com/uploads/1/3/0/7/130775635/wedirinasexomaz.pdfIn PDF document text
    • http://suigenerismama.com/uploads/1/3/0/6/130639477/c67dd3.pdfIn PDF document text
    • http://socialtinga.com/uploads/1/3/0/5/130551006/7539777.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://www.adobe.com/).NotoIn PDF document text
    • http://www.google.com/get/noto/http://www.adobe.com/type/ThisIn PDF document text
    • http://scripts.sil.org/OFLNotoIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8281 8460 bytes
SHA-256: d763baa3bc3f1f89971f17691075fe7acb92a13cc6a5c0cf6163b5ccadf8031d
font_01_sfnt_off0000a30a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA30A 8168 bytes
SHA-256: 44dc20ff77d142357bccde4f210bc30c83a7bd6b74d0efa7111b5c6287c6ccf3

Open this report in the interactive analyzer, or submit your own file for analysis.