Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce40e1ea22fd7896…

MALICIOUS

PDF

47.9 KB Created: 2020-03-20 11:05:06 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1f8253984818ef8c6ac437cbff729966 SHA-1: 05b59839afde5954a279bcf32d87ab20449032d4 SHA-256: ce40e1ea22fd7896195084a413a2e75b76d1f0fd3cd9ad9702220fc72cfc5c87
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The primary link directs to a page discussing laptop purchases, suggesting a lure to a potentially malicious site. The ML classifier strongly indicated maliciousness. No scripts were extracted from this sample.

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://trentriverdesigns.com/uploads/1/3/1/0/131070434/131070434.html#que+ordenador+portatil+comprar+para+trabajar
    • http://breakfastwear.com/uploads/1/3/0/7/130739383/wajiwojafipuniz_vejexakizukudop.pdf
    • http://www.thebrowarchetek.com/uploads/1/3/0/9/130969435/a260baf0812f.pdf
    • http://jostarot.com/uploads/1/3/0/7/130776356/kinuris_kikal_zofedera_tufonale.pdf
    • http://mihiomanus.com/uploads/1/3/0/2/130287529/xuzotibebi.pdf
    • http://lansugarden.com/uploads/1/3/0/5/130588678/dumakazuborigixofuga.pdf
    • http://thelawnation.com/uploads/1/3/0/4/130490250/9174786.pdf
    • http://beyondrootsnursery.ca/uploads/1/3/0/7/130739311/kazezodipanumomeri.pdf
    • http://www.giseledamour.com/uploads/1/3/0/8/130874241/6650155.pdf
    • http://jessebirdart.com/uploads/1/3/0/4/130483350/mozusumugugonevojozo.pdf
    • http://tedxquotes.com/uploads/1/3/0/4/130435574/foxedotobupif_kurivedenawotix.pdf
    • http://manneckartatwetpaintstudio.com/uploads/1/3/0/6/130621052/2ec86459ef59a8a.pdf
    • http://clickfraudmanagement.com/uploads/1/3/0/5/130539316/56f949.pdf
    • http://www.truehealthquote.com/uploads/1/3/0/5/130551021/7734595.pdf
    • http://tideviewcider.ca/uploads/1/3/0/6/130604013/01c3274e7.pdf
    • http://georgwebbtogo.com/uploads/1/3/0/4/130436390/228e48b6b9.pdf
    • http://www.ardmacelectric.com/uploads/1/3/0/7/130739479/perarigonerov-xuxufedolupupor-fofetimoduf-jadojidogof.pdf
    • http://patometry.com/uploads/1/3/0/6/130604522/diwusevimorexorid.pdf
    • http://goodnewzs.net/uploads/1/3/0/8/130874467/difesud.pdf
    • http://www.raidersrus-guild.com/uploads/1/3/0/5/130540134/sazosuxibutu_liwividu.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_off0000926f.bin
00a85d07f89f3f0935820249da4ab94804ed6ede0764e361b0821f6787b85c06
pdf-font-stream PDF embedded font (sfnt) at offset 0x926F 8552 bytes